Primitive Archer
Main Discussion Area => Flintknapping => Topic started by: Gus on February 02, 2012, 02:53:08 pm
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West Texas Ryolite.
Well I tried heat treating it several different ways with no success.
Turkey roaster at 450F for 20 hours
In the oven at 500F for 15 hours.
In sand with a fire built over it for 10 or so hours.
Then did some deep searching and it looks like this type Ryolite doesn't like the heat I have to offer.
So I figured if I can't cook it, I'll just hit it harder. :)
Finally beginning to have a little success working it.
I've got a long way to go, but least they are beginning to look like points... kinda. :)
(http://i1251.photobucket.com/albums/hh547/augustus1967/P2010001.jpg)
(http://i1251.photobucket.com/albums/hh547/augustus1967/P2010002.jpg)
Thanks for looking!
-gus
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Send a piece to mullet. Have him throw it in the kiln he just got when he does another batch.
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I don't think heat is gonna help ya out much there....just keep swinging for the fences son. :laugh:
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Haven't had much luck pressure flaking it.
So I started using a Punch/Indirect Percussion on it.
I'm past heat treating it.
An interesting thing about the rock this flake came from, about a thirty pounder, it rang like a fine bell or an anvil when struck.
I though that was pretty cool. :)
-gus
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Know what you mean,There is a slope of stone over in Montana that when you kick into the top of the slide and get it going.it sounds like bells tumbling downhill. Good rock,but tough. ' Frank
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That does look like one tough customer!
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Uh-oh, I have quite a bit of that. I was hoping heating it would make it more workable. I'm going to have to try a big ball-peen hammer to spall it. My heavy copper pipe doesn't touch it.
George
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Gus is that the stuff I gave you?
Cipriano
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My heavy copper pipe doesn't touch it.
How about a 30/30 >:D
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Where did you find that Leaverite? Heat won't help that.
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Dad gumit Gus, I didn't know concrete was knappable. That looks like a tool eater. You did a fine job w/it.
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I spent a little time with James parker last wing and was breaking rhyolite with a dogwood billet. He told me you would beat yorself to death with anything else.
I'm no flint napper by any means but I think James knows just a little bit about it.
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I've argued with James over that. :) I've watched Claude Van Order work Ryolite with a copper bopper while talking to a group of people and make a paper thin point look easy. I have a fluted point he made from Argelite that he hand fluted, while talking with everybody at the Dade City knap-Inn.
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Thank You Fells...
Cipriano, Yes Sir that is the stuff.
Had a chance to sit with George this past Saturday, after Osage Cutting.
He showed me a few new processes that are AWESOME!!!!!
Look forward to trying some indirect percussion on this stuff to see if I can get it to thin a little more.
He also sent me home with a handfull of heat treated rock to play with.
Thank You George!!! :)
-gus
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Thanks Gus, you notice it just took a couple minutes to show you everything I know. ;D Don't get your hopes too high though. You remember that I used regular percussion to take off the big flakes at the start. I'm not sure how well indirect will handle that tough rock. My heavy copper bopper sure did not make much headway against that stuff.
George