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slabs of obsidian what 2 do?

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ricochet:
hey yall i got a question, i just got some sawed slaps of obsidian they are 3/8 thick and1/4 thick they are flat and smooth will just shatter if i try and break'em with my billet or blopper? or should i saw'em to the shape i want then flake'em help please

mullet:
 Start a series of short flakes down each side. Then grind the sides good. You should start getting that Ovate look. Then grind your platforms and run your flakes across , pressure flaking. If it's thick, crisscross your flakes down the side and then come back with your Billet and reduce your slab usesing the platforms you just made.

bowmo:
everything you need to know right here.

dan

http://www.youtube.com/watch?v=z1Yl1_JRCh0&feature=PlayList&p=24864DC3C1944B10&index=0&playnext=1

mullet:
  I just looked at those video's. He must buy his slabs. He could save some rock by cutting them a little, less wide.

bowmo:
well it doesn't seem to matter, jim seems to have piles of stone and everything he touches seems to be golden. if you listen to video he talks about liking the big slabs because he can still do percussion work on them. he goes over how to work some thinner slabs too...

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