Main Discussion Area > Flintknapping
Cooking rock
Knotty:
Great, thanks for the information!
Chippintuff:
Your process sounds good, but the temp was too high for all that fractured. A lot of Texas rock will blow up if you go over 400, and some will even blow up if you go over 350. Generally the darker stone is less tolerant of heat. Lighter stone can go higher. When there is any doubt, cook at a low temp; after cooling, check and recook any rock that is not ready, but at a higher temp. Keep notes on what required what temp. Sometimes trial and error is the best gauge provided you start low and work up till a good result is reached.
WA
bjrogg:
Thanks chippintuff it allway registers when you screw up just nice to know why. I'm pretty sure this local stuff can take a lot of heat. I don't have any $ into it. I don't know anything about the flint river but Frank said about the same as Zuma so hope it turns out good. Didn't put a real lot of flint river in.
Bj
Zuma:
Chip has good advice.
I wrote this for the other thread so take it with a grain. :laugh:
I hear ya. I have always been stone poor.
My theory is cook cooler and shorter than recipes
that are on sites that cook and sell rock.
I think they are way off. Just to discourage you
from doing your own or getting you to blow it up.
I have never had problems cooking in the household oven.
If you have a lid on your pan you won't blow up the door glass
or the elements.
Sand helps even the heat so thin and thick get more even heat.
500 degrees will do fine on your butterscotch.
try my times above. There pretty short and you won't blow anything up.
Zuma
bjrogg:
Thanks Zuma I just turned off the roaster. Went by your times my wife's roaster says it goes to 450 so I should be safe. Now just let it slow cool and see what comes out. I think her other roaster goes to 475 if I need a little more heat
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