jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
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Post by jamesp on Jun 29, 2016 10:18:23 GMT -5
Jim the guy teaching me percussion flint knapping has some hopped up turbo charged turkey roasters and he loaned me one. It goes to almost 600 degrees according to my thermometer. It's a industrial rewired deal with extra insulation on the bottom and top. I take it to 200 and hold for 48 hours to dry the stone and then up 50 degrees per hour until it maxes out and hold it for 2-3 days on coral and some jaspers. Flint is 350 to 400. He has a kiln but it takes a huge amount to fill it up. He knows Stan very well, they r both master knappers. Can't wait to try the dark red mahogany coral in the tumbler. Recipe sounds bang on. It is not a 24 hour process. 24 hours makes a mess. Many don't get that. If he is on Stan's level all is well. Turkey roasters don't play. Popular cookers. yea, if your gonna fire up a kiln you should load it to the nines. Headed to Florida tomorrow. Hope for no rain, coral river way way low
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Post by orrum on Jun 29, 2016 14:14:29 GMT -5
Good hunting and relating trip to you! Hopefully the theivin has stopped!
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
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Post by jamesp on Jun 29, 2016 15:14:12 GMT -5
Good hunting and relating trip to you! Hopefully the theivin has stopped! Thanks Bill. Yea, gotta make sure that kid does not get under my skin. Always have a good time there.
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monna0000
starting to spend too much on rocks
Member since May 2016
Posts: 243
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Post by monna0000 on Jul 4, 2016 9:43:30 GMT -5
Jim the guy teaching me percussion flint knapping has some hopped up turbo charged turkey roasters and he loaned me one. It goes to almost 600 degrees according to my thermometer. It's a industrial rewired deal with extra insulation on the bottom and top. I take it to 200 and hold for 48 hours to dry the stone and then up 50 degrees per hour until it maxes out and hold it for 2-3 days on coral and some jaspers. Flint is 350 to 400. He has a kiln but it takes a huge amount to fill it up. He knows Stan very well, they r both master knappers. Can't wait to try the dark red mahogany coral in the tumbler. Why are we cooking flint and jasper??
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Post by orrum on Jul 4, 2016 13:16:40 GMT -5
Makes the rock break easier and changes color to better look for knapping.
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monna0000
starting to spend too much on rocks
Member since May 2016
Posts: 243
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Post by monna0000 on Jul 4, 2016 21:25:14 GMT -5
Noticed it in some of the coral discussions but didn't know about the flint and jasper. The Danish flint are really dull but maybe I should try and cook some. Are there any threads in the forum about the "recepie" for cooking rocks? Sure my husband Will Think I've lost it completely
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
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Post by jamesp on Jul 6, 2016 0:01:15 GMT -5
Noticed it in some of the coral discussions but didn't know about the flint and jasper. The Danish flint are really dull but maybe I should try and cook some. Are there any threads in the forum about the "recepie" for cooking rocks? Sure my husband Will Think I've lost it completely Let me think about good search phrase Monna. Heat treating knapping material Heat treating temperatures for different rocks How to heat treat rocks for knapping Those should get you in the direction.
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monna0000
starting to spend too much on rocks
Member since May 2016
Posts: 243
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Post by monna0000 on Jul 6, 2016 21:50:04 GMT -5
Thanks jamesp. I'll have a look at it when I get home from vacation, It looks to be more complicated than my first thoughts(pot,water,Stone,stove)
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Jul 8, 2016 0:09:07 GMT -5
Thanks jamesp. I'll have a look at it when I get home from vacation, It looks to be more complicated than my first thoughts(pot,water,Stone,stove) Mona, the testing would be first with one small piece in a toaster oven. (Hope u have those in Scandinavia!) Try 450F for an hour. Then higher temps until u find desirable results. What is happening is the heat is altering the color salts in the stone to more colorful forms. If the Stone doesn't contain the right color salts then nothing happens. If your target stone has a variety of colors then several series of tests for each color is in order. Take careful notes and record your results in pictures for future reference. spiceman you too amigo. Hope this helps.
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