Main Discussion Area > Flintknapping
80 pounds of dry obsidian
caveman2533:
No I remember reading an article from the old Fllintknappers exchange or the Tarp that was describing the same conditions and the gist of the article was that it had stresses in it and the heating relieved the stress. I would think you could go pretty high with maybe 500, take notes and let us know.
Hunts with stone:
Your gonna need a bigger roaster hehehe
stickbender:
Cold weather will affect it also.
Wayne
Zuma:
Well Rob, it looks like saw time.
I had the flake I took off today
do the oposite of what the last one did.
It must be a Clovis flake cuse it's
An OVERSHOT. lol >:D
Zuma
Zuma:
--- Quote from: caveman2533 on September 21, 2015, 06:08:18 am ---No I remember reading an article from the old Fllintknappers exchange or the Tarp that was describing the same conditions and the gist of the article was that it had stresses in it and the heating relieved the stress. I would think you could go pretty high with maybe 500, take notes and let us know.
--- End quote ---
Well Steve,
I cranked these spalls up to 450 for a test 50 degrees every hour or so.
I let them soak an hour. Dropped back to 300 at 50 an hour.
Turned off the heat and let cool overnight.
Thanks to your advice I think I have plenty of good knapping for a long
a time to come.
The best part is getting a decent ground platform is now possible.
Still a little splintery where the spall I knapped seperated from the
mother ship.
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