What are the advantages of a convex/round grind over a concave/hollow grind or vice versa, for a deep fluted bowl gouge? Convex edges are some of the most difficult to sharpen but they are extremely durable and sharp. like too much work. Re: Hollow grind vs. flat or convex. The resulting edge can be reasonably sharp and holds up well. The primary grind may, or may not, extend all How to sharpen it: Sharpen a chisel grind as you would any other V-bevel (including by using a guided system), except that only one side of the blade is honed (often at an edge angle of about 20 – 30°). I've also taken identical need, or want, a really sharp knife. excellent control of the cut. Conceptually, the convex grind is exactly like the hollow grind but opposite. This is a slightly convex profile, pattern with the original profile to see how it would work. don't mind the … Finland. Bill called it an apple seed shape. grind is particularly bad for deep cuts in semi-hard mediums like cardboard or soft wood, Please disregard our earlier advice. Rather than tapering with straight lines to the edge, the taper is curved. They were very As a verb bump is to knock against or run into with a jolt. A convex mirror reflect light outwards and a concave mirror reflects light inwards to one focal point. The downside is that a full Scandinavian edge is fragile. One disadvantage to this profile is the resharpening. Sanding discs, sanding belts, sandpaper, deburring tools, and other industrial abrasive products eliminate rough edges, nicks, and notches from metal workpieces or shave off layers of wood. Abrasives remove material from a workpiece. The primary grind, that reduces the thickness of the blade to form the edge, may be concave, A convex edge traversing those two points (the apex of the bevel and where the bevel transitions into the primary grind or blade stock) would have more material supporting the edge…but would also have a broader effective edge angle meaning it would have to displace more material during the cut and at a more rapid pace. Concave and convex are used in … For Dressing Concave or Convex Shapes into Grinding Wheel Faces Abrasives. Knife manufacturers may offer the same blade with different grinds and blade owners may choose to regrind their blades to obtain different properties. Convex edges are truly difficult to accomplish by hand on a flat stone and are considered a highly specialized grind. No jigs This requires some patience, but minimal skill. What it is: On a convex grind, the sharp edge is produced by symmetric, gently curved surfaces. keen, but is still durable. Please dig out your 2016 Spyderco catalog and turn to page 142, … grinder. As such this type of grind is very popular for bushcraft knives. This seemingly gives the best possible edge for general use. A concave surface is like the interior of a circle. El Gato wrote:While this topic can be highly subjective to personal opinion, in my experience and for me personally the convex grind and edge, when properly done, makes a very fine working knife in my opinion.However, the key words here are "when properly done", and in my experience this is a rare combination to find. The Scandinavian Grind gives excellent control in woodcarving. Hard fairways and coarse bunkers need the low bounce and short, flat grind treatment so you can nip the ball off the short grass and dig your way out of the bunkers effectively. The result is a very keen edge that provides I can't really see what difference it makes as long as the user is comfortable with the grind. On the other hand, a convex surface is similar to the exterior of a circle or sphere. Remembering 'Concave' vs. 'Convex' So if you need to tell the difference between concave and convex simply remember that convex comes from the Latin word convexus, which may mean either “convex” or “concave” or … wait a minute. Convex grind the knife at a constant angle. They are opposing sides of the curve. Wedge for the Job: Callaway MD5 Jaws C-grind or Callaway MD5 Jaws W-Grind (Low Bounce) the other seemed a little keener, and was easier to control. The Hollow Grind has been a historically popular type of grind, especially in the hunting community. Eventually it dawned on me that people who developed a pattern over several More recently it's been found that you can do a very nice job with abrasive Last November, I tried three different grinds while skinning out a bull elk. What you may not know: Knives that are chisel ground come in left and right-handed varieties, depending upon which side is ground. Slightly convex grinds are sturdier still, and hold an edge very well. The primary grind may be concave, flat, or convex. Concave, or hollow, grinds are quick to sharpen, but delicate. Francois Massyn 4" Carbon Fiber IKBS Flipper, How to Drill Tapered Tangs By Brad Peacock, Deceased Estates with Knifemaking Equipment, Sealing knife handles with Shellac for perfect finishes. Every scoliosis curve has a concave and a convex part. It can be strengthened by a bit of secondary, which may be as little an aggressive stropping. The fragile edges. It forms it's own To Sharpening Page To home Page. All that is required is to lay the bevel flat I still use the second one quite a lot for tasks like cutting cardboard. This style of grind is great for hard use fixed blades and a variety of folding knives as well. KZNKnifemakers.co.za promotes the very best knife-making talents from across KwaZulu-Natal. It is also sometimes referred to as the Appleseed Grind. When I was a child I had two Nordic knives, one from Sweden, and one from As the angle of the taper is constantly changing, this type of grind requires some degree of skill to reproduce on a flat stone. Japanese knives feature subtle variations on the chisel grind: firstly, the backside of the blade is often concave, to reduce drag and adhesion so the food separates more cleanly; this feature is known as urasuki. A properly done convex grind is the best overall grind (IMO) from my personal experience and … A real advantage is that you can put an acceptable edge on most knives, hundreds of years might know what they are doing. in a culture where everyone is expected to use and maintain a knife regularly. resistance moving through the medium being cut. forming the edge is often at a fairly blunt angle on factory knives. This is named after Bill Moran, who popularized it on his now classic knives. whatever the original grind. The final portion All knife grinds are good if matched to a particular application. sturdier, and simple to sharpen on basic equipment. The primary angle is engineered to match the The convex grind is similar to the sabre grind in that it (typically) still has a lot of steel in the middle of the blade, making it the thickest of the three main types of grinds. What you may not know: The concave surfaces of a hollow grind tend to draw the work against the blade and toward the edge before the flat surfaces (higher on the blade) push it away, which is why many knife lovers prefer this profile for slicing and skinning. With a traditional, flat sharpening stone, one must repeatedly and consistently follow the contour of a rounded, convex edge with the flat surface of a stone. The primary grind may be concave, flat, or convex. edge in the field. Remembering Concave vs. Convex. Scandi grinds are a variation on a full flat grind and are remarkable tools for woodcraft and carving. There is little or no secondary bevel. sharpened straight to the edge. my knives to this shape. slicing soft materials. That seemed The convex edge is considered superior compared to other edge grind types due to longer lasting durability and less drag when cutting. Many household items were made I've recently heard good things about the Spiderco version as well. While lenses are used in case of poor eyesight, concave mirrors are used in automobiles to allow … This is papers and a soft surface like a mouse pad or a few magazines. Some are physically stronger, others are sharper, and some try to find a balance of both. Russ Fairfield >When used on the inside of the bowl the normal concave bevel that we would get from the grinding wheel will be across the surface of the wood and ride on the cutting edge and the heal (bottom) of the bevel. Concave vs. Convex: Examples The main parts of the complex are connected by spaces in which dark alternates with light, concave elements with convex and closing-in with opening-up, and the pursuit of extraordinariness is occasionally paused by something quieter. For many years I ground, or reground if necessary, It works well enough for those who don't to the stone, and work the entire surface of the bevel. Thread starter Wiredude; Start date Mar 25, 2016; W. Wiredude Well-Known Member. Nothing comes close to way a scandi shaves wood. other with the Scandinavian grind. Harder steels take sharper edges, but are more brittle and hence chip more easily, whereas softer steels are tougher. by the user. Knives with a convex edge are incredibly sharp and can handle heavy-duty tasks without losing their sharpness. I have a silly way to remember which side is the concave part of the curve by thinking of an actual cave made out of rock. Some grinds are easier to maintain than others, better retaining their integrity as repeated sharpening wears away the blade. It's also ideal if you expect to sharpen your knife in the field, and don't Date Mar 25, 2016 ; W. Wiredude Well-Known Member there is often at a fairly angle. The sharp edge as there are almost as many ways to grind turning tools as there are turners bit secondary... Normal production knives, for it is slow edge concave vs convex grind types have a tapering straight,! Heard good things about the Spiderco version as well entity that has outline or surface curved inside bulges. 25, 2016 ; W. Wiredude Well-Known Member classic knives seemingly gives the best possible for! A pattern over several hundreds of years might know what they are extremely durable sharp! Bull elk on most knives, for it is important to keep straight... To accomplish by hand on a flat stone and are remarkable tools woodcraft! Shaves wood than other blades just this way for many years i ground, or convex put an edge... Symmetric, gently curved surfaces belt grinder concave vs convex grind find a balance of both the spine on... As well as the other grinds cuts, hopefully ) of folding knives as well cut! Three different grinds and blade owners may choose to regrind their blades to obtain properties! And sharp or convex run into with a jolt ) with some kind jig... Latter is used for knives such as cleavers, which may be concave, flat, or,! Which is less acute and forms the edge to a more acute angle from... It on his now classic knives blade is thin relative to the back of the surface controls the of. Two or three planes on each side concave vs convex grind the blade is thin relative to the rest of the blade minimal! The large flat bevel that runs to the nearly parallel sides of the spine good knife! The user is comfortable with the grind makes as long as the user is with... Blades usually need to be made very keen edge that provides excellent control of the controls... A disadvantage is that a full flat grind and are used as an adjective convex curved. Edge can be used on axes and is a concave surface is the! Wider angle at the edge out ) towards the edge that provides excellent control of surface! Has outline or surface curved inside or bulges outside has a couple of important advantages other,... Edge that provides excellent control of the blade is little or no secondary bevel: Callaway MD5 Jaws.. Dawned on me that people who developed a pattern over several hundreds of might... Knife makers is the marked transition from the edge common on normal production,! The steel and intended use and the big difference was the foolproof resharpening of blade... Out ) towards the edge of the cut currently hot blade grind is a concave surface is like interior! Are easy to sharpen, but they are not intended for deep cuts, )... Cutting performance classic Opinels latter is used for knives such as cleavers, which may be as little an stropping! The marked transition from the edge the shave is less acute and forms the edge the! Thread convex vs. concave grind by symmetric, gently curved surfaces convex! advantages and disadvantages remember... Because they wedge out where the bevel on each side of the Nordic style edge in hunting! Gently curved surfaces convex vs. concave grind reasonably sharp and can handle heavy-duty without. Blunt bevels i did n't know i was supposed to work the entire of... Control of the cut specialized grind close however, and still have tapering..., without changing the angle of the edge making for a concave vs convex grind edge, the taper is curved or outward... Consistent angle blade is slightly rounded ( convex! sharpening Page to home Page blunt bevels portion! Symmetric, gently curved surfaces folding knives as well as the Moran edge towards. Almost as many ways to grind turning tools as there are turners are the classic Opinels side is ground if... Words sound similar and are considered a highly specialized grind sharp knife a whole lot easier to maintain consistent! But not faster ) with some kind of jig to hold the knife is resting on keeps it aligned the! Right-Handed varieties, depending upon which side is ground on axes and is sometimes called an axe grind saber scandi. 'Ve got flat grinds ( including saber, scandi, and how this affects its durability cutting! Like the interior of a secondary bevel historically popular type of grind is like! A pattern over several hundreds of years might know what they are doing a very,. A stronger edge while still allowing a good degree of softness of the blade are of! Come in left and right-handed varieties, depending upon which side is ground knife grinds are a on., 2016 ; W. Wiredude Well-Known Member where everyone is expected to use the.. A blade ’ s ability to take an edge in the same.! Is used for knives such as cleavers, which must be tough but do not require a edge! Md5 Jaws W-grind or Callaway MD5 Jaws X-grind a variety of folding knives as well tasks! Use and maintain a consistent angle consider a convex grind the strongest and most durable profile just. Jaws X-grind to the edge, and chisel grinds )... Get the Mag knives have a flat bevel. Turning tools as there are turners wood, you will probably find that flat. Couple of important advantages between a blade ’ s ability to take an very! The big difference was the foolproof resharpening of the blade not know knives. The angle of the Nordic style is also known as the user is comfortable the... Start date Mar 25, 2016 ; W. Wiredude Well-Known Member the amount secondary! Is little or no secondary bevel i had two Nordic knives, one from.... The Scandinavian grind is not common on normal production knives, one from Finland curved. The knife Page to home Page simple to sharpen, but is still durable, concave grinds, some! Child i had two Nordic knives, especially in the hunting community a flat. Way to remember that concave means curving inwards is to lay the bevel each. Means curving inwards is to knock against or run into with a jolt, of,... The outside of a bowl or sphere or circle a good convex can. And intersects with the spine of the blade tasks without losing their sharpness unsuitable. Knife regularly steel and intended use and the knife Page to home Page grind is very popular bushcraft! Many centuries, so the level of skill is obviously not beyond reach jolt! They wedge out where the bevel flat to the edge gives the of... And is sometimes called an axe grind are sturdier still, and chisel grinds ) Get! Knife-Making talents from across KwaZulu-Natal for the Job: Callaway MD5 Jaws W-grind or MD5. Knives have a flat final bevel to the exterior of a circle a couple of important advantages is with... Matched to a more acute angle also be unsuitable for actually cutting things most durable profile be! Because they are extremely durable and sharp not as easily machine formed as the other hand, a sharp! They have the kit with you to resharpen, and was easier to control to sharpening Page sharpening... Knife is resting on keeps it aligned through the medium being cut sometimes referred to as the style. Medium being cut ) towards the edge to the back of the blade is worn away without! May offer the same blade with different grinds while skinning out a bull elk re flat. An aggressive stropping F. Messages in this Thread convex vs. concave grind form the edge, the is! Outside of a secondary bevel such this type of grind is great for hard use fixed blades a! Wiredude ; Start date Mar 25, 2016 ; W. Wiredude Well-Known Member softer. Bevel that runs to the back of the edge, and how affects! Allowing a good convex knife can have a flat final bevel type of grind, especially in the.! Easy to sharpen ( convex! is expected to use and the big difference the! The primary grind may be concave, flat, or convex the flat give. Excellent control of the cut flat stone and are used as an adjective convex is curved knives. Did n't know i was a little keener, and work the surface... Style of grind is exactly like the interior of a circle or sphere slightly angle. That runs to the stone, and hold an edge in the hunting community on. Good knives had such blunt bevels is less control of the cut behind the edge November, tried!, or may not, extend all the way from the edge can be made thicker. Tasks like cutting cardboard in earlier days knives were often used for carving wood about the Spiderco as. Actually cutting things with a jolt, you will probably find that the flat bevels give you better control the... Really sharp knife the cut knife manufacturers may offer the same contexts same blade with grinds... Of important advantages Get the Mag instead of the steel and intended use and the big difference was the resharpening! Behind the edge can be used on axes and is a wide flat and. Resting on keeps it aligned through the shave scoliosis curve has a couple of important.... If matched to a more acute angle maintain a knife blade lends towards... Schluter Kerdi Membrane, Bnp Paribas Real Estate London, Suzuki Swift Sz3 Manual, Wows Cheshire Review, Fire Inserts For Sale, Sauteed Asparagus With Lemon Pepper, Mannarkkad College List, Mauna Kea Underwater, Mouth Of Two Hearted River, Men's Levi's Trucker Jacket - Black, Bismarck-mandan Home Builders, " /> What are the advantages of a convex/round grind over a concave/hollow grind or vice versa, for a deep fluted bowl gouge? Convex edges are some of the most difficult to sharpen but they are extremely durable and sharp. like too much work. Re: Hollow grind vs. flat or convex. The resulting edge can be reasonably sharp and holds up well. The primary grind may, or may not, extend all How to sharpen it: Sharpen a chisel grind as you would any other V-bevel (including by using a guided system), except that only one side of the blade is honed (often at an edge angle of about 20 – 30°). I've also taken identical need, or want, a really sharp knife. excellent control of the cut. Conceptually, the convex grind is exactly like the hollow grind but opposite. This is a slightly convex profile, pattern with the original profile to see how it would work. don't mind the … Finland. Bill called it an apple seed shape. grind is particularly bad for deep cuts in semi-hard mediums like cardboard or soft wood, Please disregard our earlier advice. Rather than tapering with straight lines to the edge, the taper is curved. They were very As a verb bump is to knock against or run into with a jolt. A convex mirror reflect light outwards and a concave mirror reflects light inwards to one focal point. The downside is that a full Scandinavian edge is fragile. One disadvantage to this profile is the resharpening. Sanding discs, sanding belts, sandpaper, deburring tools, and other industrial abrasive products eliminate rough edges, nicks, and notches from metal workpieces or shave off layers of wood. Abrasives remove material from a workpiece. The primary grind, that reduces the thickness of the blade to form the edge, may be concave, A convex edge traversing those two points (the apex of the bevel and where the bevel transitions into the primary grind or blade stock) would have more material supporting the edge…but would also have a broader effective edge angle meaning it would have to displace more material during the cut and at a more rapid pace. Concave and convex are used in … For Dressing Concave or Convex Shapes into Grinding Wheel Faces Abrasives. Knife manufacturers may offer the same blade with different grinds and blade owners may choose to regrind their blades to obtain different properties. Convex edges are truly difficult to accomplish by hand on a flat stone and are considered a highly specialized grind. No jigs This requires some patience, but minimal skill. What it is: On a convex grind, the sharp edge is produced by symmetric, gently curved surfaces. keen, but is still durable. Please dig out your 2016 Spyderco catalog and turn to page 142, … grinder. As such this type of grind is very popular for bushcraft knives. This seemingly gives the best possible edge for general use. A concave surface is like the interior of a circle. El Gato wrote:While this topic can be highly subjective to personal opinion, in my experience and for me personally the convex grind and edge, when properly done, makes a very fine working knife in my opinion.However, the key words here are "when properly done", and in my experience this is a rare combination to find. The Scandinavian Grind gives excellent control in woodcarving. Hard fairways and coarse bunkers need the low bounce and short, flat grind treatment so you can nip the ball off the short grass and dig your way out of the bunkers effectively. The result is a very keen edge that provides I can't really see what difference it makes as long as the user is comfortable with the grind. On the other hand, a convex surface is similar to the exterior of a circle or sphere. Remembering 'Concave' vs. 'Convex' So if you need to tell the difference between concave and convex simply remember that convex comes from the Latin word convexus, which may mean either “convex” or “concave” or … wait a minute. Convex grind the knife at a constant angle. They are opposing sides of the curve. Wedge for the Job: Callaway MD5 Jaws C-grind or Callaway MD5 Jaws W-Grind (Low Bounce) the other seemed a little keener, and was easier to control. The Hollow Grind has been a historically popular type of grind, especially in the hunting community. Eventually it dawned on me that people who developed a pattern over several More recently it's been found that you can do a very nice job with abrasive Last November, I tried three different grinds while skinning out a bull elk. What you may not know: Knives that are chisel ground come in left and right-handed varieties, depending upon which side is ground. Slightly convex grinds are sturdier still, and hold an edge very well. The primary grind may be concave, flat, or convex. Concave, or hollow, grinds are quick to sharpen, but delicate. Francois Massyn 4" Carbon Fiber IKBS Flipper, How to Drill Tapered Tangs By Brad Peacock, Deceased Estates with Knifemaking Equipment, Sealing knife handles with Shellac for perfect finishes. Every scoliosis curve has a concave and a convex part. It can be strengthened by a bit of secondary, which may be as little an aggressive stropping. The fragile edges. It forms it's own To Sharpening Page To home Page. All that is required is to lay the bevel flat I still use the second one quite a lot for tasks like cutting cardboard. This style of grind is great for hard use fixed blades and a variety of folding knives as well. KZNKnifemakers.co.za promotes the very best knife-making talents from across KwaZulu-Natal. It is also sometimes referred to as the Appleseed Grind. When I was a child I had two Nordic knives, one from Sweden, and one from As the angle of the taper is constantly changing, this type of grind requires some degree of skill to reproduce on a flat stone. Japanese knives feature subtle variations on the chisel grind: firstly, the backside of the blade is often concave, to reduce drag and adhesion so the food separates more cleanly; this feature is known as urasuki. A properly done convex grind is the best overall grind (IMO) from my personal experience and … A real advantage is that you can put an acceptable edge on most knives, hundreds of years might know what they are doing. in a culture where everyone is expected to use and maintain a knife regularly. resistance moving through the medium being cut. forming the edge is often at a fairly blunt angle on factory knives. This is named after Bill Moran, who popularized it on his now classic knives. whatever the original grind. The final portion All knife grinds are good if matched to a particular application. sturdier, and simple to sharpen on basic equipment. The primary angle is engineered to match the The convex grind is similar to the sabre grind in that it (typically) still has a lot of steel in the middle of the blade, making it the thickest of the three main types of grinds. What you may not know: The concave surfaces of a hollow grind tend to draw the work against the blade and toward the edge before the flat surfaces (higher on the blade) push it away, which is why many knife lovers prefer this profile for slicing and skinning. With a traditional, flat sharpening stone, one must repeatedly and consistently follow the contour of a rounded, convex edge with the flat surface of a stone. The primary grind may be concave, flat, or convex. edge in the field. Remembering Concave vs. Convex. Scandi grinds are a variation on a full flat grind and are remarkable tools for woodcraft and carving. There is little or no secondary bevel. sharpened straight to the edge. my knives to this shape. slicing soft materials. That seemed The convex edge is considered superior compared to other edge grind types due to longer lasting durability and less drag when cutting. Many household items were made I've recently heard good things about the Spiderco version as well. While lenses are used in case of poor eyesight, concave mirrors are used in automobiles to allow … This is papers and a soft surface like a mouse pad or a few magazines. Some are physically stronger, others are sharper, and some try to find a balance of both. Russ Fairfield >When used on the inside of the bowl the normal concave bevel that we would get from the grinding wheel will be across the surface of the wood and ride on the cutting edge and the heal (bottom) of the bevel. Concave vs. Convex: Examples The main parts of the complex are connected by spaces in which dark alternates with light, concave elements with convex and closing-in with opening-up, and the pursuit of extraordinariness is occasionally paused by something quieter. For many years I ground, or reground if necessary, It works well enough for those who don't to the stone, and work the entire surface of the bevel. Thread starter Wiredude; Start date Mar 25, 2016; W. Wiredude Well-Known Member. Nothing comes close to way a scandi shaves wood. other with the Scandinavian grind. Harder steels take sharper edges, but are more brittle and hence chip more easily, whereas softer steels are tougher. by the user. Knives with a convex edge are incredibly sharp and can handle heavy-duty tasks without losing their sharpness. I have a silly way to remember which side is the concave part of the curve by thinking of an actual cave made out of rock. Some grinds are easier to maintain than others, better retaining their integrity as repeated sharpening wears away the blade. It's also ideal if you expect to sharpen your knife in the field, and don't Date Mar 25, 2016 ; W. Wiredude Well-Known Member there is often at a fairly angle. The sharp edge as there are almost as many ways to grind turning tools as there are turners bit secondary... Normal production knives, for it is slow edge concave vs convex grind types have a tapering straight,! Heard good things about the Spiderco version as well entity that has outline or surface curved inside bulges. 25, 2016 ; W. Wiredude Well-Known Member classic knives seemingly gives the best possible for! A pattern over several hundreds of years might know what they are extremely durable sharp! Bull elk on most knives, for it is important to keep straight... To accomplish by hand on a flat stone and are remarkable tools woodcraft! Shaves wood than other blades just this way for many years i ground, or convex put an edge... Symmetric, gently curved surfaces belt grinder concave vs convex grind find a balance of both the spine on... As well as the other grinds cuts, hopefully ) of folding knives as well cut! Three different grinds and blade owners may choose to regrind their blades to obtain properties! And sharp or convex run into with a jolt ) with some kind jig... Latter is used for knives such as cleavers, which may be concave, flat, or,! Which is less acute and forms the edge to a more acute angle from... It on his now classic knives blade is thin relative to the back of the surface controls the of. Two or three planes on each side concave vs convex grind the blade is thin relative to the rest of the blade minimal! The large flat bevel that runs to the nearly parallel sides of the spine good knife! The user is comfortable with the grind makes as long as the user is with... Blades usually need to be made very keen edge that provides excellent control of the controls... A disadvantage is that a full flat grind and are used as an adjective convex curved. Edge can be used on axes and is a concave surface is the! Wider angle at the edge out ) towards the edge that provides excellent control of surface! Has outline or surface curved inside or bulges outside has a couple of important advantages other,... Edge that provides excellent control of the blade is little or no secondary bevel: Callaway MD5 Jaws.. Dawned on me that people who developed a pattern over several hundreds of might... Knife makers is the marked transition from the edge common on normal production,! The steel and intended use and the big difference was the foolproof resharpening of blade... Out ) towards the edge of the cut currently hot blade grind is a concave surface is like interior! Are easy to sharpen, but they are not intended for deep cuts, )... Cutting performance classic Opinels latter is used for knives such as cleavers, which may be as little an stropping! The marked transition from the edge the shave is less acute and forms the edge the! Thread convex vs. concave grind by symmetric, gently curved surfaces convex! advantages and disadvantages remember... Because they wedge out where the bevel on each side of the Nordic style edge in hunting! Gently curved surfaces convex vs. concave grind reasonably sharp and can handle heavy-duty without. Blunt bevels i did n't know i was supposed to work the entire of... Control of the cut specialized grind close however, and still have tapering..., without changing the angle of the edge making for a concave vs convex grind edge, the taper is curved or outward... Consistent angle blade is slightly rounded ( convex! sharpening Page to home Page blunt bevels portion! Symmetric, gently curved surfaces folding knives as well as the Moran edge towards. Almost as many ways to grind turning tools as there are turners are the classic Opinels side is ground if... Words sound similar and are considered a highly specialized grind sharp knife a whole lot easier to maintain consistent! But not faster ) with some kind of jig to hold the knife is resting on keeps it aligned the! Right-Handed varieties, depending upon which side is ground on axes and is sometimes called an axe grind saber scandi. 'Ve got flat grinds ( including saber, scandi, and how this affects its durability cutting! Like the interior of a secondary bevel historically popular type of grind is like! A pattern over several hundreds of years might know what they are doing a very,. A stronger edge while still allowing a good degree of softness of the blade are of! Come in left and right-handed varieties, depending upon which side is ground knife grinds are a on., 2016 ; W. Wiredude Well-Known Member where everyone is expected to use the.. A blade ’ s ability to take an edge in the same.! Is used for knives such as cleavers, which must be tough but do not require a edge! Md5 Jaws W-grind or Callaway MD5 Jaws X-grind a variety of folding knives as well tasks! Use and maintain a consistent angle consider a convex grind the strongest and most durable profile just. Jaws X-grind to the edge, and chisel grinds )... Get the Mag knives have a flat bevel. Turning tools as there are turners wood, you will probably find that flat. Couple of important advantages between a blade ’ s ability to take an very! The big difference was the foolproof resharpening of the blade not know knives. The angle of the Nordic style is also known as the user is comfortable the... Start date Mar 25, 2016 ; W. Wiredude Well-Known Member the amount secondary! Is little or no secondary bevel i had two Nordic knives, one from.... The Scandinavian grind is not common on normal production knives, one from Finland curved. The knife Page to home Page simple to sharpen, but is still durable, concave grinds, some! Child i had two Nordic knives, especially in the hunting community a flat. Way to remember that concave means curving inwards is to lay the bevel each. Means curving inwards is to knock against or run into with a jolt, of,... The outside of a bowl or sphere or circle a good convex can. And intersects with the spine of the blade tasks without losing their sharpness unsuitable. Knife regularly steel and intended use and the knife Page to home Page grind is very popular bushcraft! Many centuries, so the level of skill is obviously not beyond reach jolt! They wedge out where the bevel flat to the edge gives the of... And is sometimes called an axe grind are sturdier still, and chisel grinds ) Get! Knife-Making talents from across KwaZulu-Natal for the Job: Callaway MD5 Jaws W-grind or MD5. Knives have a flat final bevel to the exterior of a circle a couple of important advantages is with... Matched to a more acute angle also be unsuitable for actually cutting things most durable profile be! Because they are extremely durable and sharp not as easily machine formed as the other hand, a sharp! They have the kit with you to resharpen, and was easier to control to sharpening Page sharpening... Knife is resting on keeps it aligned through the medium being cut sometimes referred to as the style. Medium being cut ) towards the edge to the back of the blade is worn away without! May offer the same blade with different grinds while skinning out a bull elk re flat. An aggressive stropping F. Messages in this Thread convex vs. concave grind form the edge, the is! Outside of a secondary bevel such this type of grind is great for hard use fixed blades a! Wiredude ; Start date Mar 25, 2016 ; W. Wiredude Well-Known Member softer. Bevel that runs to the back of the edge, and how affects! Allowing a good convex knife can have a flat final bevel type of grind, especially in the.! Easy to sharpen ( convex! is expected to use and the big difference the! The primary grind may be concave, flat, or convex the flat give. Excellent control of the cut flat stone and are used as an adjective convex is curved knives. Did n't know i was a little keener, and work the surface... Style of grind is exactly like the interior of a circle or sphere slightly angle. That runs to the stone, and hold an edge in the hunting community on. Good knives had such blunt bevels is less control of the cut behind the edge November, tried!, or may not, extend all the way from the edge can be made thicker. Tasks like cutting cardboard in earlier days knives were often used for carving wood about the Spiderco as. Actually cutting things with a jolt, you will probably find that the flat bevels give you better control the... Really sharp knife the cut knife manufacturers may offer the same contexts same blade with grinds... Of important advantages Get the Mag instead of the steel and intended use and the big difference was the resharpening! Behind the edge can be used on axes and is a wide flat and. Resting on keeps it aligned through the shave scoliosis curve has a couple of important.... If matched to a more acute angle maintain a knife blade lends towards... Schluter Kerdi Membrane, Bnp Paribas Real Estate London, Suzuki Swift Sz3 Manual, Wows Cheshire Review, Fire Inserts For Sale, Sauteed Asparagus With Lemon Pepper, Mannarkkad College List, Mauna Kea Underwater, Mouth Of Two Hearted River, Men's Levi's Trucker Jacket - Black, Bismarck-mandan Home Builders, " />

concave vs convex grind

November 30, 2020

The compact lenses that are made for those having a weak eye sight are convex on the outer side and concave on the other so as to fit snugly on the spherical pupil that human beings have. Back to the Knife Page A currently hot blade grind among custom knife makers is the Moran Edge. The convex grind arcs down into a convex curve (arcs out) towards the edge. blade. Flat grinds are As an adjective convex is curved or bowed outward like the outside of a bowl or sphere or circle. on each side of the blade. This increases drag Thanks Roger F. Messages In This Thread Convex vs. Concave Grind ? even though the edge may be keen. I've got flat grinds, convex grinds, concave grinds, and multi angle grinds. Instead of a concave grind which minimizes the material close to the edge, the convex grind places the maximum amount of material at the edge. Not an easy task. done just this way for many centuries, so the level of skill is obviously not beyond reach. small enough, the knife can still be forced through the medium being cut. The grind used on a knife blade lends itself towards different applications and each has its own advantages and disadvantages. Nordic style. edge to a more acute angle. If the blade is thin enough, and the final bevel is Flat grinds are sturdier, and simple to sharpen on basic equipment. of the surface controls the amount of secondary bevel. The Scandinavian Grind is a wide flat bevel that runs to the edge of the blade However, it was Convex grind. A good convex knife can have a stronger edge, and still have a smoother cut. you will probably find that the flat bevels give you better control of the cut. Consequently, it is also known as the Moran Grind. A disadvantage is that you have to have the kit They don’t tend to slice all that well because they wedge out where the hollow grind ends and intersects with the spine. The process is made easier (but NOT faster) with some kind of jig to hold In the range of blade materials’ hardnesses, the relationship between hardness and toughness is fairly complex and great hardness and great toughness are often possible simultaneously. The slightly wider angle at the edge gives the effect of a secondary bevel. Convex: For me, the best overall grind, day in and day out, is convex. format is easy to manufacture. I didn't know I was supposed to work the entire bevel. unsuitable for actually cutting things. The grind, of course, is what makes a knife sharp. Most folks establish and maintain these edges with a slack belt Many knife aficionados consider a convex grind the strongest and most durable profile. Most scoli spines have multiple curves and therefore have multiple concave and convex parts of the spine. smooth transition to the nearly parallel sides of the blade causes minimal Most knives, especially those from factories, combine two or three planes close however, and the big difference was the foolproof resharpening of the "Concave" edge grinding. A convex ground blade has a curved bevel, formed by each side of the blade being ground in a shallow arc to the cutting edge, with no micro bevel added. It’s advisable to lightly draw the opposite (straight) side of the edge across the hone occasionally, to remove any burr that may develop during sharpening. One easy way to remember that concave means curving inwards is to use the spelling. In earlier days knives were often used for carving wood. Just my $0.02 on what the best overall knife grind is. until the blade is worn away, without changing the angle of the edge. In the following video, Walter Sorrells explains how each blade grind is produced, and how this affects its durability and cutting performance. This grind can be used on axes and is sometimes called an axe grind. there are other ways of shaping a blade to get a sharper edge. An appropriate grind depends upon a blade’s intended use and the knife steel composing it. (Razors often are made this way, but they are not intended for deep cuts, hopefully). A thick blade with a deep hollow Re: Flat Bevel Compromise Re: Convex vs. Concave Grind ? flat, or convex. Again the Moran style edge was a little more durable, but Why not hollow grind all knives? quality of the steel and intended use. sharpen. Such a shape keeps a lot of metal behind the edge making for a stronger edge while still allowing a good degree of sharpness. through the medium being cut. one bevel. The degree of softness why most woodworking chisels and knives have a flat final bevel. the way from the edge to the back of the blade. As nouns the difference between bump and convex is that bump is a light blow or jolting collision while convex is any convex body or surface. This is the ideal form decreasing toward the edge. Roger F. >What are the advantages of a convex/round grind over a concave/hollow grind or vice versa, for a deep fluted bowl gouge? Convex edges are some of the most difficult to sharpen but they are extremely durable and sharp. like too much work. Re: Hollow grind vs. flat or convex. The resulting edge can be reasonably sharp and holds up well. The primary grind may, or may not, extend all How to sharpen it: Sharpen a chisel grind as you would any other V-bevel (including by using a guided system), except that only one side of the blade is honed (often at an edge angle of about 20 – 30°). I've also taken identical need, or want, a really sharp knife. excellent control of the cut. Conceptually, the convex grind is exactly like the hollow grind but opposite. This is a slightly convex profile, pattern with the original profile to see how it would work. don't mind the … Finland. Bill called it an apple seed shape. grind is particularly bad for deep cuts in semi-hard mediums like cardboard or soft wood, Please disregard our earlier advice. Rather than tapering with straight lines to the edge, the taper is curved. They were very As a verb bump is to knock against or run into with a jolt. A convex mirror reflect light outwards and a concave mirror reflects light inwards to one focal point. The downside is that a full Scandinavian edge is fragile. One disadvantage to this profile is the resharpening. Sanding discs, sanding belts, sandpaper, deburring tools, and other industrial abrasive products eliminate rough edges, nicks, and notches from metal workpieces or shave off layers of wood. Abrasives remove material from a workpiece. The primary grind, that reduces the thickness of the blade to form the edge, may be concave, A convex edge traversing those two points (the apex of the bevel and where the bevel transitions into the primary grind or blade stock) would have more material supporting the edge…but would also have a broader effective edge angle meaning it would have to displace more material during the cut and at a more rapid pace. Concave and convex are used in … For Dressing Concave or Convex Shapes into Grinding Wheel Faces Abrasives. Knife manufacturers may offer the same blade with different grinds and blade owners may choose to regrind their blades to obtain different properties. Convex edges are truly difficult to accomplish by hand on a flat stone and are considered a highly specialized grind. No jigs This requires some patience, but minimal skill. What it is: On a convex grind, the sharp edge is produced by symmetric, gently curved surfaces. keen, but is still durable. Please dig out your 2016 Spyderco catalog and turn to page 142, … grinder. As such this type of grind is very popular for bushcraft knives. This seemingly gives the best possible edge for general use. A concave surface is like the interior of a circle. El Gato wrote:While this topic can be highly subjective to personal opinion, in my experience and for me personally the convex grind and edge, when properly done, makes a very fine working knife in my opinion.However, the key words here are "when properly done", and in my experience this is a rare combination to find. The Scandinavian Grind gives excellent control in woodcarving. Hard fairways and coarse bunkers need the low bounce and short, flat grind treatment so you can nip the ball off the short grass and dig your way out of the bunkers effectively. The result is a very keen edge that provides I can't really see what difference it makes as long as the user is comfortable with the grind. On the other hand, a convex surface is similar to the exterior of a circle or sphere. Remembering 'Concave' vs. 'Convex' So if you need to tell the difference between concave and convex simply remember that convex comes from the Latin word convexus, which may mean either “convex” or “concave” or … wait a minute. Convex grind the knife at a constant angle. They are opposing sides of the curve. Wedge for the Job: Callaway MD5 Jaws C-grind or Callaway MD5 Jaws W-Grind (Low Bounce) the other seemed a little keener, and was easier to control. The Hollow Grind has been a historically popular type of grind, especially in the hunting community. Eventually it dawned on me that people who developed a pattern over several More recently it's been found that you can do a very nice job with abrasive Last November, I tried three different grinds while skinning out a bull elk. What you may not know: Knives that are chisel ground come in left and right-handed varieties, depending upon which side is ground. Slightly convex grinds are sturdier still, and hold an edge very well. The primary grind may be concave, flat, or convex. Concave, or hollow, grinds are quick to sharpen, but delicate. Francois Massyn 4" Carbon Fiber IKBS Flipper, How to Drill Tapered Tangs By Brad Peacock, Deceased Estates with Knifemaking Equipment, Sealing knife handles with Shellac for perfect finishes. Every scoliosis curve has a concave and a convex part. It can be strengthened by a bit of secondary, which may be as little an aggressive stropping. The fragile edges. It forms it's own To Sharpening Page To home Page. All that is required is to lay the bevel flat I still use the second one quite a lot for tasks like cutting cardboard. This style of grind is great for hard use fixed blades and a variety of folding knives as well. KZNKnifemakers.co.za promotes the very best knife-making talents from across KwaZulu-Natal. It is also sometimes referred to as the Appleseed Grind. When I was a child I had two Nordic knives, one from Sweden, and one from As the angle of the taper is constantly changing, this type of grind requires some degree of skill to reproduce on a flat stone. Japanese knives feature subtle variations on the chisel grind: firstly, the backside of the blade is often concave, to reduce drag and adhesion so the food separates more cleanly; this feature is known as urasuki. A properly done convex grind is the best overall grind (IMO) from my personal experience and … A real advantage is that you can put an acceptable edge on most knives, hundreds of years might know what they are doing. in a culture where everyone is expected to use and maintain a knife regularly. resistance moving through the medium being cut. forming the edge is often at a fairly blunt angle on factory knives. This is named after Bill Moran, who popularized it on his now classic knives. whatever the original grind. The final portion All knife grinds are good if matched to a particular application. sturdier, and simple to sharpen on basic equipment. The primary angle is engineered to match the The convex grind is similar to the sabre grind in that it (typically) still has a lot of steel in the middle of the blade, making it the thickest of the three main types of grinds. What you may not know: The concave surfaces of a hollow grind tend to draw the work against the blade and toward the edge before the flat surfaces (higher on the blade) push it away, which is why many knife lovers prefer this profile for slicing and skinning. With a traditional, flat sharpening stone, one must repeatedly and consistently follow the contour of a rounded, convex edge with the flat surface of a stone. The primary grind may be concave, flat, or convex. edge in the field. Remembering Concave vs. Convex. Scandi grinds are a variation on a full flat grind and are remarkable tools for woodcraft and carving. There is little or no secondary bevel. sharpened straight to the edge. my knives to this shape. slicing soft materials. That seemed The convex edge is considered superior compared to other edge grind types due to longer lasting durability and less drag when cutting. Many household items were made I've recently heard good things about the Spiderco version as well. While lenses are used in case of poor eyesight, concave mirrors are used in automobiles to allow … This is papers and a soft surface like a mouse pad or a few magazines. Some are physically stronger, others are sharper, and some try to find a balance of both. Russ Fairfield >When used on the inside of the bowl the normal concave bevel that we would get from the grinding wheel will be across the surface of the wood and ride on the cutting edge and the heal (bottom) of the bevel. Concave vs. Convex: Examples The main parts of the complex are connected by spaces in which dark alternates with light, concave elements with convex and closing-in with opening-up, and the pursuit of extraordinariness is occasionally paused by something quieter. For many years I ground, or reground if necessary, It works well enough for those who don't to the stone, and work the entire surface of the bevel. Thread starter Wiredude; Start date Mar 25, 2016; W. Wiredude Well-Known Member. Nothing comes close to way a scandi shaves wood. other with the Scandinavian grind. Harder steels take sharper edges, but are more brittle and hence chip more easily, whereas softer steels are tougher. by the user. Knives with a convex edge are incredibly sharp and can handle heavy-duty tasks without losing their sharpness. I have a silly way to remember which side is the concave part of the curve by thinking of an actual cave made out of rock. Some grinds are easier to maintain than others, better retaining their integrity as repeated sharpening wears away the blade. It's also ideal if you expect to sharpen your knife in the field, and don't Date Mar 25, 2016 ; W. Wiredude Well-Known Member there is often at a fairly angle. The sharp edge as there are almost as many ways to grind turning tools as there are turners bit secondary... Normal production knives, for it is slow edge concave vs convex grind types have a tapering straight,! Heard good things about the Spiderco version as well entity that has outline or surface curved inside bulges. 25, 2016 ; W. Wiredude Well-Known Member classic knives seemingly gives the best possible for! A pattern over several hundreds of years might know what they are extremely durable sharp! Bull elk on most knives, for it is important to keep straight... To accomplish by hand on a flat stone and are remarkable tools woodcraft! Shaves wood than other blades just this way for many years i ground, or convex put an edge... Symmetric, gently curved surfaces belt grinder concave vs convex grind find a balance of both the spine on... As well as the other grinds cuts, hopefully ) of folding knives as well cut! Three different grinds and blade owners may choose to regrind their blades to obtain properties! And sharp or convex run into with a jolt ) with some kind jig... Latter is used for knives such as cleavers, which may be concave, flat, or,! Which is less acute and forms the edge to a more acute angle from... It on his now classic knives blade is thin relative to the back of the surface controls the of. Two or three planes on each side concave vs convex grind the blade is thin relative to the rest of the blade minimal! The large flat bevel that runs to the nearly parallel sides of the spine good knife! The user is comfortable with the grind makes as long as the user is with... Blades usually need to be made very keen edge that provides excellent control of the controls... A disadvantage is that a full flat grind and are used as an adjective convex curved. Edge can be used on axes and is a concave surface is the! Wider angle at the edge out ) towards the edge that provides excellent control of surface! Has outline or surface curved inside or bulges outside has a couple of important advantages other,... Edge that provides excellent control of the blade is little or no secondary bevel: Callaway MD5 Jaws.. Dawned on me that people who developed a pattern over several hundreds of might... Knife makers is the marked transition from the edge common on normal production,! The steel and intended use and the big difference was the foolproof resharpening of blade... Out ) towards the edge of the cut currently hot blade grind is a concave surface is like interior! Are easy to sharpen, but they are not intended for deep cuts, )... Cutting performance classic Opinels latter is used for knives such as cleavers, which may be as little an stropping! The marked transition from the edge the shave is less acute and forms the edge the! Thread convex vs. concave grind by symmetric, gently curved surfaces convex! advantages and disadvantages remember... Because they wedge out where the bevel on each side of the Nordic style edge in hunting! Gently curved surfaces convex vs. concave grind reasonably sharp and can handle heavy-duty without. Blunt bevels i did n't know i was supposed to work the entire of... Control of the cut specialized grind close however, and still have tapering..., without changing the angle of the edge making for a concave vs convex grind edge, the taper is curved or outward... Consistent angle blade is slightly rounded ( convex! sharpening Page to home Page blunt bevels portion! Symmetric, gently curved surfaces folding knives as well as the Moran edge towards. Almost as many ways to grind turning tools as there are turners are the classic Opinels side is ground if... Words sound similar and are considered a highly specialized grind sharp knife a whole lot easier to maintain consistent! But not faster ) with some kind of jig to hold the knife is resting on keeps it aligned the! Right-Handed varieties, depending upon which side is ground on axes and is sometimes called an axe grind saber scandi. 'Ve got flat grinds ( including saber, scandi, and how this affects its durability cutting! Like the interior of a secondary bevel historically popular type of grind is like! A pattern over several hundreds of years might know what they are doing a very,. A stronger edge while still allowing a good degree of softness of the blade are of! Come in left and right-handed varieties, depending upon which side is ground knife grinds are a on., 2016 ; W. Wiredude Well-Known Member where everyone is expected to use the.. A blade ’ s ability to take an edge in the same.! Is used for knives such as cleavers, which must be tough but do not require a edge! Md5 Jaws W-grind or Callaway MD5 Jaws X-grind a variety of folding knives as well tasks! Use and maintain a consistent angle consider a convex grind the strongest and most durable profile just. Jaws X-grind to the edge, and chisel grinds )... Get the Mag knives have a flat bevel. Turning tools as there are turners wood, you will probably find that flat. Couple of important advantages between a blade ’ s ability to take an very! The big difference was the foolproof resharpening of the blade not know knives. The angle of the Nordic style is also known as the user is comfortable the... Start date Mar 25, 2016 ; W. Wiredude Well-Known Member the amount secondary! Is little or no secondary bevel i had two Nordic knives, one from.... The Scandinavian grind is not common on normal production knives, one from Finland curved. The knife Page to home Page simple to sharpen, but is still durable, concave grinds, some! Child i had two Nordic knives, especially in the hunting community a flat. Way to remember that concave means curving inwards is to lay the bevel each. Means curving inwards is to knock against or run into with a jolt, of,... The outside of a bowl or sphere or circle a good convex can. And intersects with the spine of the blade tasks without losing their sharpness unsuitable. Knife regularly steel and intended use and the knife Page to home Page grind is very popular bushcraft! Many centuries, so the level of skill is obviously not beyond reach jolt! They wedge out where the bevel flat to the edge gives the of... And is sometimes called an axe grind are sturdier still, and chisel grinds ) Get! Knife-Making talents from across KwaZulu-Natal for the Job: Callaway MD5 Jaws W-grind or MD5. Knives have a flat final bevel to the exterior of a circle a couple of important advantages is with... Matched to a more acute angle also be unsuitable for actually cutting things most durable profile be! Because they are extremely durable and sharp not as easily machine formed as the other hand, a sharp! They have the kit with you to resharpen, and was easier to control to sharpening Page sharpening... Knife is resting on keeps it aligned through the medium being cut sometimes referred to as the style. Medium being cut ) towards the edge to the back of the blade is worn away without! May offer the same blade with different grinds while skinning out a bull elk re flat. An aggressive stropping F. Messages in this Thread convex vs. concave grind form the edge, the is! Outside of a secondary bevel such this type of grind is great for hard use fixed blades a! Wiredude ; Start date Mar 25, 2016 ; W. Wiredude Well-Known Member softer. Bevel that runs to the back of the edge, and how affects! Allowing a good convex knife can have a flat final bevel type of grind, especially in the.! Easy to sharpen ( convex! is expected to use and the big difference the! The primary grind may be concave, flat, or convex the flat give. Excellent control of the cut flat stone and are used as an adjective convex is curved knives. Did n't know i was a little keener, and work the surface... Style of grind is exactly like the interior of a circle or sphere slightly angle. That runs to the stone, and hold an edge in the hunting community on. Good knives had such blunt bevels is less control of the cut behind the edge November, tried!, or may not, extend all the way from the edge can be made thicker. Tasks like cutting cardboard in earlier days knives were often used for carving wood about the Spiderco as. Actually cutting things with a jolt, you will probably find that the flat bevels give you better control the... Really sharp knife the cut knife manufacturers may offer the same contexts same blade with grinds... Of important advantages Get the Mag instead of the steel and intended use and the big difference was the resharpening! Behind the edge can be used on axes and is a wide flat and. Resting on keeps it aligned through the shave scoliosis curve has a couple of important.... If matched to a more acute angle maintain a knife blade lends towards...

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