Heat treating chert with fire, (another thought)

[iowabow]

First color change photos.
These two spalls were from the same larger rock. The whiter one is cooked

[iowabow]

You can compare color change in these two pictures.

[iowabow]

These two picture are also before and after giving a pick shade to the stone

[iowabow]

These to flakes represent how the white chert changes when fired. The firing makes the stone loose the blue grey on left and turn pure white on right.

[iowabow]

Cool photo my wife took! She took all of the photos because she is amazing!

[iowabow]

Photo of heat treated white and how some of it has a light pick shade.

[iowabow]

Seems to flake well on this sneek peek with the pressure flaker.

[iowabow]

This flake was tested for edge to edge flaking

[iowabow]

I really wanted at this point to make a point but knew many were waiting for the pictures and the end of the story.

[iowabow]

Now boring pictures of me uncovering flakes. There were 3 inches of ash sitting on top of the sand.

[iowabow]

I discoverd complete burn of charcoal in the center but just on the edge it did not and that kind confirms for me the reason for the long burn.

[iowabow]

Pictures of the stone being removed and a very happy knapper.

[iowabow]

I really enjoyed sharing my first pit firing with all of you here on-line but it is very important to recognize those who contributed to the success of this project
. I am not the smart guy here on PA what I have learned about how to do this came from the help of the following
John Whittaker's book on knapping
JW ..he is a real smart guy and funny
Josh Barnes
Scott stanberry
Tower
Jackcrafty
Mullet
Rick B
Jcinpc
Cowbow
And all that gave input on this post.
Thanks guys you made this week a lot of fun!

[iowabow]

Hey Rick B thanks for your input on this project. I am the kinda guy that wants to know the why in why does it work so the data just answers the hundreds of question that pop in my head. But the next time I will approach it like you and just do it because it works that way lol. The stone is Burlington.

[iowabow]

Forgot this picture