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Cooking rock

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bjrogg:
I'm planing on cooking some rock. I've done this before with my wife's turkey toaster "shhhh don't let her hear that" I cooked some local stone with mixed results some improved and some no change. What I'm more concerned about is that I cooked some Texas Flint for my brother once. Some showed really good improvement but unfortunately more than an acceptable amount became very brittle and would shatter. I'm planing on cooking some Flint River butterscotch. The process I used last time was placing layers of dry sand and spalls in roaster smaller one to outside larger to inside. I then turned temp to 200 for 24 hrs the. Ramped up temp about 75 degrees every hr till 475 I also removed liner. I left about 14 hrs then turned heat down over 4 hrs and let sit for 24hrs. I don't  know if that was to high of temp for Texas Flint? From everything I'd seen they tried to get the highest temp they could from turkey roaster. I'd like a good recipe for cooking butterscotch flint fiver if anyone has one. Thanks
BJ

Zuma:
I pulled up Ed's thread Red Jasper
Chaek it out.
My recipe works for Edwards, Rough Fnglish,
some coral, most jaspers and Butterscotch
Flint River.
Zuma

bjrogg:
thanks Zuma I swiped the wife's turkey roaster this morning when she wasn't looking, have to remember to get it cleaned up and returned before sons graduation party in 3 weeks. I filled it up mostly with local stuff that I have worked raw put some flint river on top all surrounded by dry sand I used to cook before. Hopefully this sample batch works good, who'd think you could screw up cooking rock but I'm kind of a barbecue guy. i'll let you know how it taste I mean works lol
bj

Knotty:
When you think you don't have parents controlling you.. Here comes the wife! 😂

Cooking rocks is a new thing for me, never heard it, I guess it makes certain rocks easier to knap?

bjrogg:
Yes knotty the primitive tribes used fire to alter the rocks properties and make it knap better. Lord knows I need somebody to keep me out of trouble lol.

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