/diy/ - Do It Yourself

>>1592420
Horrible picture, but the first one I found
From the factory the edge you have is slightly concave from being ground on a round grinding wheel in a machine.

The first time you hand sharpen it, you are re profiling the whole end of the blade into more of a flat grind. You will never be able to match the original grind with a stone, so it can be a lot of work. Thats why course stones exist to move metal.

You sharpen the primary back until the "shoulders" are gone and its a flat primary grind.