Primitive Archer

Main Discussion Area => Flintknapping => Topic started by: leapingbare on June 27, 2008, 11:12:15 am

Title: Heat treating Buffalo River
Post by: leapingbare on June 27, 2008, 11:12:15 am

  So i tyred to heat treat some buffalo River chert last night and this morning when i looked at it there was no change in texture, only a change in color went from a dull light brown color to a Rusty color brown.
 I cooked it in a pan of sand in the oven at 550' for one and a half hrs. The Kansas chert i heat treat changed and became waxier. But its the buffalo river that i would like to get waxier.
 Anyone ever had any success heat treating Buffalo River?

Title: Re: Heat treating Buffalo River
Post by: david w. on June 27, 2008, 03:45:50 pm

i have never heat treated and i can hardly knap but 1 1/2 hours seems way to short

Title: Re: Heat treating Buffalo River
Post by: leapingbare on June 27, 2008, 03:56:11 pm

it was in the oven about 7 hrs, tuck 5 hrs to get the temp up to 550

Title: Re: Heat treating Buffalo River
Post by: david w. on June 27, 2008, 04:03:09 pm

oh well i never heat treated so i really cant help

Title: Re: Heat treating Buffalo River
Post by: El Destructo on June 27, 2008, 08:41:01 pm

Jesse .....I cant find a Thing on Buffalo River....but I did find this....in case it may be helpful in the Future....why do you want to Heat Treat it anysways??? Everything I have read says that it flakes great without Heat....is it for the Color Change???

Agate Brazilian - 450-500

Agate India - 500 

Agate Mexican - 500 

Agate Montana - 550 

Agate Moss - 450 

Alibates - 425-500

Bloodstone - 500

Burlington - 600-650 

Coral - 450-600 

Dacite - NONE 

Flint Ridge - 500-600 (set the roaster at 200 degrees for two hrs then increase until the max temp. is reached and leave it for 12 to 24 hours)

Flint River - 375 -450 

Ft. Hood - 400-550 

Georgetown - 450 

Jasper Red - 500 (very hard stuff to work)

Jasper Sunset 450-475 

Jasper Fancy 450-500 

Jasper Picture 525 

Kay County - 500-600 

Knife River Flint - 350 (Do NOT overheat or it will pot lid)

Limestone - 550- plus (not good material) 

Novaculate - 700-900 

Obsidian - NONE 

Pedernales - 450 

Petrified Wood - 300-450

Title: Re: Heat treating Buffalo River
Post by: mullet on June 28, 2008, 01:16:12 pm

  Jesse, when I heat treat the local chert we have here. I just put the spalls in the toaster oven, turn it all the way on (500dgs) and let it cook all night. I unplug it in the morning when I go to work and it is cool when I get home. You can usually hear the diferrence when you smack it.

Title: Re: Heat treating Buffalo River
Post by: leapingbare on June 30, 2008, 12:02:19 pm

The Buffalo River chert i heated last weekend did change some, it napped better and was less grainy.
 Thanks for the list Michael thats a good reference, not only for me but for anyone.