Hi all, I have a piece of 1/4inch cold rolled steel plate that I want to engrave some drill points on. Basically I'm going to be engraving some feeler spots for my punch to grab on to before I run it under the drill press. I've done this before and took too deep of cuts. What depth should I engrave it at? I just want enough for my center punch to grab on to.
Oh and I'm useing a 1/2 v bit to do it.