Thanks. I will give this a try. I use sharpies in reloading to check seating depths (to see if a bullet is engaging the lands in the barrel), but never thought about using it to see where your hone is missing the edges of your razor.

Quote Originally Posted by MattCB View Post
It sounds like a longer way of performing a sharpie test. Apply sharpie marker to the edge of the blade, give it a few laps on the stone and see where it has been ground off by the stone. Give it a whirl.