Primitive Archer
Main Discussion Area => Flintknapping => Topic started by: seider on January 05, 2012, 12:06:03 am
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I know someone has tryed this and was wondering how much sand did you put in the bottom and how much over your spalls. Have not tryed it yet but thinking about it. My only concern is the use of the propain in the bottles and how long it will last.
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Frying pot? It may not heat evenly. Just get ya an electric turkey roaster. Works great , lots of guys use them .
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Yea thought about that I have a little toster oven
Have used it a couple of times
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I'm on the hunt for an Electric Turkey Oven...
Is this the type to be on the lookout for?
Thank You,
-gus
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What type of temp range does it need to have?
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What type of temp range does it need to have?
Bevan just enough to be WELL DONE >:D O:) >:D O:) >:D
Cipriano
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What type of temp range does it need to have?
Bevan just enough to be WELL DONE >:D O:) >:D O:) >:D
Cipriano
That is about as helpfull as a smack upside the head. ;D (And if I could reach through the monitor, I would oblige you >:D)
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Try to find one that goes to 500 deg. Mine is 450 deg & it works great.
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Thanks Tower!
You fill with sand like I have read?
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I might be making this up, but I seem to remember seeing vermiculite used instead of sand.
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I use sand. But I've read that some folks don't. It may not matter much , but I think it helps in heating & cooling evenly.
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Thanks, appreciate the info. ;)
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Gus , that's it! Had to go from in the ground to a roaster with the move.
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Excellent... Craigs List has it for $25... :)
-gus
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Worth every cent!
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Gotta pick one up.
Been bangin my head off of some rock, Ryolite, trying to get it heat treated and not getting her done in the oven or BBQ Pit.
Hopefully this will work the trick! :)
Thanks Again,
-gus
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Gus, in our part of the country (NC/SC) I don't believe that rhyolite's knapability is improved by heat treating. Rick B
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Well i guess i would have to get one. Then i will have to start taking my time and get some good flakes off and through em in the cooker.
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Got a small load of buffalo river chert and have never heat treated rock. Looking to get the turkey roaster setup and wanted to find out a few things like sand or not, temps, cook time etc. Anything would be helpful! Thank you
Tracy
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Tracy, I put about an inch of sand in the bottom then stack the rocks in there in layers with sand in-between. Put the lesser grades in the corners and your best stuff in the center. Then fill the roaster to the top with sand. Crank it to 150 and let it sit for two days to dry. Then crank it up to 400 and let it soak. I'm cookin BR right now with a 14hr soak. Let it cool before you try to handle it. Hope this helps. :)
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I am a rookie at this but this is what I do. Buy a roaster at a yard sale for $15.00. Put 3" of Lake Michigan beach sand on the bottom, lay rocks on the sand so they do-not touch, put 3" of beach sand on the rock and continue until you finish with a 3' covering of sand. turn the roaster on to 200 and then turn up 50 degrees every hour until you reach top heat, mine is 450 degress. I cook mostly Texas rock and some Flintridge for 8 hours and then let it cool down on its own. do not lift the lid. It will take a couple of day cool down. Hope this helps.
NOTE: I found a source spot for rock outwest and also cook the chert that I found and it turns out real good.
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Thanks for the advice and tips!
Will- let me summarize: once layered, set temp at 150 and cook for 2 days to remove any moisture and then increase to 400 for 14 hours and then allow a day or two to gradually cool to air temp.
JEB- about 8 hours at 450 once you hit max temp?
Thanks
Tracy
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Tracy that's about it. I think it better to go a little less heat to start. You can always give it more if you need. Every roaster is a little different. ;) I've never had issues with the rocks touching also I dont think my roaster will heat any faster than 50 an hour anyway so I just crank it up and let her eat :) hope this helps
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They pretty much summed it up. I set my temp at 225 to start , but I store my rock is a covered place. Total cook time for me is 24 hrs.
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Plenty of time to get my rock heated before I get back home Tracy ;) Just remember that I found a lot of it. Leave me some please >:D
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Plenty of time to get my rock heated before I get back home Tracy ;) Just remember that I found a lot of it. Leave me some please >:D
Maybe, but I hauled it out to the car! >:D
Thanks for the tips and advice Will, Tower, and JEB
Tracy
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Ttt
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Just curious how long a roaster oven last. Since it is left on for long periods of time, I was wondering how long they last before they burn out?
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Turkey roasters like the one pictured work great. I pour in about 1" of playground sand and arrange the spalls to heat treat, filling with sand as I get about half way and continuing until I fill the whole thing and dome as much as will fit with the lid on top. One thing to remember is to initially heat it to to only about 150-175 degrees for 24 hours. You might get by with less pre-heating, but remember water boils at 212 degrees and if there is any moisture in your stone, guess what happens when it turns to steam inside your rock? You can test with a probe thermometer but check all over.
Another thing to remember about roasters is that the sides and bottom are much hotter than the middle because that's where the elements are located. Just stick a thermometer in different spots once you get it heating and you'll see. I have hit almost 700 degrees on the sides of mine, but it's one of those antique ones that gets hotter. So I usually only turn the knob on mine to about 400 for most cherts that need 450 to 500.
It's all a big experiment until you know your rock and roaster and their quirks. I don't bother to ramp mine down with sand in it because it will hold the temperature and slowly drop over about 24 hours, which is a plenty slow downward ramp. When I am heating I usually ramp up more carefully 200 for 4-6 hrs, then up to 300, wait an hour then up to 400 (and the same rate for higher temps). I hold the temp 24 to 48 hours leaning towards the 48 side and depending on the rock. When done, turn it off and let it set until it is cool through and through, certainly no hotter than 100 or so at the most if you are in a hurry.
Wal mart sells these around most holidays for about $25. Use the heck out of it and if it burns up - take it back! Sometimes you can find the old ones at the flea markets, but believe me, 400 gets hotter than 400.
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I was talking to the flint ridge rock guy and he said if you take the liner pan out you get at least another 100 deg, seems to work
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Yes - the liner has to go. And someone mentioned the rocks not touching - I never worry about that and can't for the life of me think of a physics reason why that would matter. The more mass the better. Fill 'er up even if it's mostly sand. Corners are the hottest place and thin spalls are best there.
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I never take the sand out of mine, use a garden fork to rake the rock out, bub
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"Wal mart sells these around most holidays for about $25. Use the heck out of it and if it burns up - take it back."
Uhh- ethically speaking, I'm not sure that's what we should be teaching the kiddies. (Daddy, isn't that a lot like stealing?!?). :-[ ???
Scott
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I never take the sand out of mine, use a garden fork to rake the rock out, bub
Sounds like feng shu therapy yoda >:D
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I lucked out and found an old Hamilton Beach cooker at the flea market last weekend for $10. It's bigger and more solid/heavier than the one I got at Walmart. Temp on the dial goes up to 500 degrees. Rick B
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Gonna be doing this soon!! Been finding some rock that works ok......I think it will be awesome with a little heat 8)
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Sounds like the one I have Rick. I like mine alot, without the pan I can get around 650 on the sides and close to the bottom.
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Darnit! I cooked my first batch of rock this week with all the advice here for drying time and cook times and now I'm hooked! I cooked Texas rock from Seider's rock pile , local porous and grainy chert, and some buffalo river from , well , buffalo river. I am impressed with the improvement of knapping this new rock. That Texas stuff rocks! Going to have to get more when this runs out. I'm a fan of heat treated rock. No doubt the paleo people did heat treat from the artifacts I've found here and how the local chert knaps now since heat treating.
Tracy