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first heat treat!

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Jodocus:
I have been finding this stone around my home for quite some time. It's lacustrine silex , and it looks just like the famous silex of Grand-Pressigny that was traded all over europe in neolithic times. Beautiful, sometimes translucent yellow stone. But it doesn't knap like that at all, it's super though.
So for the first time yesterday, I heat treated some stone. In the oven, around 250 C / 480 f degrees, for 3 hours, just a couple of tiny shards. Then I tried it as soon as it had cooled :o

WHAT A DIFFERENCE!

That stuff is as easy as my very best flint! The difference is amazing, I would never have expected that. And it looks SWEET! I'll be over my pile of crappy rock today and put it all under the fire and see it turn to gold!  :) :D :laugh: ;D

bowmo:
Heating is a addictive. We have a grey chert here in Illinois that is quite tough and not very easy to knap and if you heat to 500 for a day it turns it to white or cream colored stone that is very easy to flake. It's amazing what temps we use to cook food with can do.

Zuma:
"You'll never know if you don't go" Smashmouth
A purse from a pig's ear!
Good for you Jo
Zuma

cowboy:
That AHAH!!! Moment. Amazed me too, cooked hundreds of rocks since :).

JackCrafty:
I cook all of mine too.  Very few rocks in my area will not benefit from heat.

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