Roger
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Bomo, This particular obsidian is pretty shock resistant.
Especially when wrapped tight fo the flutes.
I actually hinge fluted both sides. Neither side had much of
a ridge. The second side actually was wavy from deep thinning
flakes and the flute did hinge but was short. It almost
disappeared when I shaped the point.
The gloss of the material absorbed the flute shadows in the photos.
Zuma