Hmm, guess I need to try and find that system for I'm sure this will burn it up at 400,000 rpm's. I can use tooling leather for after I carve, punch ext.. on it I dremel the back of the leather off, skive it that way. The room and everything in it is covered in leather dust, but I've found that to be the easiest way for me. My bit shanks are 1/8th and very small. But, it's excellent to engrave metal with it and will engrave the thin pie pans as ,long as you don't hold it in one spot long nor apply any pressure, it glides over it. But, the harder the metal the easiest it is to engrave, sorta like butter. But, I don't work in that scale, except to engrave tools with initials or names. Thank you for the info, and would like to see the youtube (when you get a chance to do one...I'll be looking up that system in the meantime).
o