878 - Explaining Heat Treating Stone with WORDS.
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- Опубліковано 3 кві 2021
- Specific heat treating guidelines can be found here:
www.pugetsoundknappers.com/how...
Revised List for Materials that DO NOT NEED or DO NOT RESPOND to heat treatment:
Obsidian
Glass
Dacite
Rhyolite
Porcellanite
Rainy Buttes Silicified/Petrified Wood
Kentucky Hornstone
Kentucky Blue/Black Chert
Indiana Hornstone
Sonora Chert
Cobden/Dongola Chert
Fort Payne Black Chert
Pitkin Black Chert
Coshocton Black Chert
Dover Chert
Onondaga Chert
Argilite
Basalt
Slate
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Thank you I found a perfect folsom 30 miles from my home here in colo and I realized that it came from a glacial flow only a mile away and I have picked up many flakes and spells and they were virtually unworkable yet the folsom was stunning with the two flutes going to within a quarter inch of the top and super fine micro flaking and I knew there had to be a trick .hopfully I wont bore you with this story four four years I camped at a lake in the wet my valley for the fourth of july and looked at a high shelf across the lake and I told myself you need to look there someday well the fifth year I went with a bunch of friends our intentions ride our motorcycles on the rainbow trail in the sangre de Cristo mts near the lake well it rained for four days almost non stop couldn't hide out in the tent any more I put on my old poncho Vietnam era jumped on my bultaco motorcycle and rode over there i found a couple of flakes then about half way up the hill to the shelf i saw it the bottom half of a tan colored folsom sticking out of the hill it was made of what we call chert or sugar flint I pulled it out and it was stunning it still had a tiny nipple athe bottom of the flute and the two flutes were so symmetrical in length that my fingers just naturally slid into them now I had been collecting for a few years but this piece was so different so unique and well made that I couldn't put it down for days I have since found an awesome cody knife a yuma several broken scottsbluffs but this was my first and nicest paleo point I've ever found and I just wanted to share with you!
Thanks for sharing. Awesome story.👍
Thanks for sharing. Only rocks I've heated was for sweat lodge.... lol
That's interesting. I think I've heated rocks for every reason except sweat lodge. 😁
While experimenting with assortments of Edwards I've been surprised how well that some of the very grainy stuff flakes without heating. Its attractive material too with red and pink streaks through slightly translucent chert. Looking forward to see how it reacts to heating.
Rare chert
Great information and video thank you.
Very interesting video, thanks for sharing!
I work with insulation and one of the outgassing from insulation when heated in very high temperatures is the binder in the insulation, so it's good advice to have ventilation.
Also, stone whool insulation can handle about +200C/+350F more than glass fibre insulation, so that is also something you can keep in mind (tho still, glass fibre can handle +600 C/1112 f so doesn't really matter with the temperatures you need)
Good to know. Thanks!
Good information
Thanks
Going to try this with my electric kitchen oven since it's all i have... My girls going to flip her lid once she sees me baking my rocks
Oh well. 😁👍
If she's does say anything I'll simply just tell her that atleast im not "smoking" rocks lol .
@@boinecastillo7455 Hehe. Clever
@@KnapperJackCrafty haha I'm cooking a biface of raw Texas Flint with my tacos once they were done I cranked it to 400° for an hour . Testing it like u said bro well see how it goes my next one will be a Georgetown biface . Hopefully an hr affects it enough .
Wow.. Im impressed! Heat treating, with words no less. I cannot wait. Do you like call them names? Insult their mom? Chastise them for their color, clarity? I cannot imagine. Looking forward...
Im so disappointed. : (
Meds are a thing.
@@KnapperJackCrafty Oh? Poor prep then for the lack of Heat Treating Stone with WORDS?
Would be nice though. Sounds like fire is almost as much pain as finding the stone. Maybe next spring I'll be able to find out for myself.
I watch Michael Tellinger and he has a question about the stones he found in Egypt. They seem to be in the construction of the pyramids.
I have no idea.
I want to heat permastone to see if it will become harder.
Go for it.
Could you basically Bbq them on a grill and assess the temp of each flake with a laser thermometer? Thank you for the video also.
Yes, that works as long as there are no drafts or breezes. Drastic temperature changes will crack the stone.
@@KnapperJackCrafty thanks amigo
I heat treated a spall of Vanport once in my woodstove ,I wrapped it in aluminum foil and placed it under some ash,12 hours latter it came out glossy and knapped great,I tried it again and failed,I also did a spall of mookaite once and I decinerated it.
Science. 😁
It would be good to see demonstration of what you consider changed and not changed by heat. Also question: does heat make rock both softer and flake better, ie less steps? Or just one? Edit: Also- couldn't you almost bbq them on a grill type setup and use a laser thermometer to assess the heat of each flake?
Heat treatment makes the stone fracture more like glass. The changes also sometimes include color and a more glossy appearance.
@@KnapperJackCrafty thank you thought this post was deleted
Have you ever tried to heat treat Georgetown flint? Try to figure out if it’s good to do so or not and does it effect the color?
Yes. Georgetown will heat treat just fine, but it's variable. Most doesn't need that much heat, if any.
@@KnapperJackCrafty Thanks! That’s what everything I’ve read says. Does it become to brittle after a heat treat? I was just going to try it to see how it effects it. Would you say 300, 350 ,or 400 max temp?
@@austinlong7700 Probably 400 would be the average. I've seen anywhere from 350 to 450. And yes, it gets very brittle if you cook it even a little bit too much.
@@KnapperJackCrafty doe’s temperature or soak time/cook time effect it greater? Would I have to worry if I did 400 for 6 hours. Slowly ramp up to 400 hold for 6 hours then slowly ramp down?
@austinlong7700 soak time is 1 hr minimum. You can soak it longer than that if you want. Sometimes, it helps to soak it more than 4 hours but it's rare. Your temp and time are fine in your last comment. No worries.