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Central Texas Chert?

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paulc:
All, I bought a box of above stone more than 1 yrs ago. Just now getting around to trying to work it. I bet this is too little info but should I cook it first?  And how?

Thanks, I can try to get some pics if that would help.

Paul

Chippintuff:
Pictures would help a lot. A lot of the Central TX rock is ready to chip when it comes out of the ground, but some needs to be cooked. Don't cook it till you get some input, because even if it needs some heat, the heat needs to be just right. Too much heat and it fractures to pieces.

WA

Zuma:
This was exposed and not down in the sand
at 500 degrees a tad to warm.
Zuma

Outbackbob48:
ooooh, potlids :o :o :(

bjrogg:
My brother had some that I cooked in turkey roaster. I over cooked it and ruined about half of it. It became really brittle. I didn't realize at the time that I could even over cook any stone in turkey roaster. Now I try to get more info and try small amount with more conservative temp and soak time 1st then if that's not enough get a little more aggressive till I get results I want. I believe some of the Texas stuff is quite a low temp I think if my memory serves me right some as low as 350 degrees. I haven't cooked a lot of stone.  I'm sure many more experienced "chiefs" on here than me. I have had some excellent results but I did over cook some Texas stone. If it's not cooked enough you can always recook it more aggressive. If you over cook it it's ruined
Bjrogg

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