Yeah i knapped the obsidian, I got this big bulky 1 lb chunk from nativewayonline, turns out it worked perfect for the head. I was pretty happy when that head came about... Had a hard time calling that head done....
The axe or whatever it is, digs into wood pretty good. i was able to use it to split a couple really dry pine logs.... When it hits wood at a great speed it creates mini flakes which sharpen itself.