The stuff starts out at 1/2" thick. I sand it down to about 3/16" or 1/8".

It wants to flake off rather than come off smoothly.

I will be looking for a type of disk for my hand grinder and also will look for a special blade for my scroll saw.

I am lucky in that I am a Shop teacher with lots of tools.

If all else fails, I may try a hole saw or possibly an expansion bit. I was wanting a piece that is oval in shape to fit the hand better. I've never seen anything like it. I want to laminate some maple and walnut for the hoop around it.

By the way, how do you use glass in one of these? Will a strike work on bare glass or must it be etched? Is it glass or plexiglass?

Thanks!