A knife is a daily necessity of ours. It can be used for hunting, chopping, chiseling etc. A knife comprises of two parts: one blade and one handle. One of the most important parts of your knife is the grind.
What is knife grind?
A grind is the cross-section of the blade’s cutting edge. The dynamic of your knife is completely based on the type of grind that you have.
How to make a knife grind?
When you are grinding a knife from its original shape, bevels are created. These bevels form the cutting edge of your knife. There are several factors that affect the knife grind. Weight, use, sharpness and durability are the important criteria when it comes to making a knife. One has to be extremely careful while making a knife bevel guide. There are several knife bevel grinding jigs that are available in the market while some make DIY knife bevel grinding jigs.
You will need a few items for knife making supply like an angle grinder, filers, Sandpaper, clamps, drill, Dremel, steel for the knife blade, and wood for your handle. Once you have all this you can DIY the knife bevel jig sitting at home.
There are several different kinds of knife grinds that are used these days.
Full Flat Grind
This blade has a form of “V” shape. While designing this kind of knife, a lot of metal is evidently lost in the cutting edge. Sharper knives with more acute knife bevel provide less durability to the edge. These types of knives can slice anything easily because the drag of the knife is less. The advantage of this knife is that they are quick and easy to sharpen. Still, the resilience of the knife is sacrificed. To sharp your full flat grind you will spend less time on your knife bevel jig. This is used when you want to push the whole knife into something. This grind is mostly used by chefs.
The Sabre or Scandinavian grind is similar to a flat grind. But the knife bevel doesn’t extend all the way towards the handle. In Sabre grind, the bevel goes up to the mid-way point of the blade. This type of knife bevel guide will help to give the knife a uniform thickness on the top area of the blade. This way the knife becomes accurate for heavy use. This kind of knife grind is mostly used in the military. This knife is recommended for survival knives. Again less durability is the major disadvantage of this knife.
A hybrid of the full flat grind and the sabre grind is the high flat grind.
Knife bevel jig is used such a way that the knife bevel gets a concave bevel cutting edge. This grind is often found on straight razors. This bevel may extend all the way up or just a little part of it towards the blade. These knives need constant maintenance and care. These types of knife grinds are mostly used in hunting knives for skinning and dressing. As the sides of this grind are curved inwards the edge of this knife becomes fragile. The convex grind is the opposite of this knife grind. The cutting edges for convex cut outwards and are used for chopping purposes.
Chisel grinds are also called zero bevel grind or single bevel grind. One side of the knife is flat and the opposite side has ground between 20-30 degrees halfway up the blade. This is often used as Japanese culinary knives. While taking this knife grind you will have to consider your dominant hand. If you’re right-handed, the cutting edge will be on the right side of the knife. This bevel is good while working with wood and stones.
These are the most common and widely used grinds from which you can choose what suits you the most.