How to- First Sharpening After Heat Treat in Beginners Place Posted February 17, 2019 8 hours ago, Brian Dougherty said: Most people use a belt grinder for the final grind, hence the dime thickness rule of thumb. Even a cheap 1x30 would be better than trying to hand sand from 0.040" to a sharpenable edge. For smaller knives like that it would get you by. So what is the rule of thumb for people hand grinding? when I asked a while back about files vs cheap grinders: I was told not to waste my money and time and learn to accept abrasives. I've no problem with hand tools, except now they simply don't work and I have metal to remove. I feel misled. And confused...?!