Thanks! I find obsidian knaps best with antler, the flaker I used is the one in the pic. I use a copper or large deer antler bopper to take a large flake off the stone to begin with. You have I good eye! That is some Onondaga, I found some down by Lake Erie earlier this year, and bought some at a powwow not long ago. My problem is finding the good quality flint. I could post a pic of some Ontario Jasper? if that's what it is, maybe you could tell me, someone said it was and I'm not an expert, but I know it knaps nice.