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Post by woodman on Jul 21, 2015 21:11:22 GMT -5
Last week I mentioned about the fact that heat can change the color of some material. Both of these slabs were cut from the same chunk. The black lines in the one were caused by heat. The second one was not heated. What ever material that infilled the cracks did not like the heat. 
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Post by orrum on Jul 22, 2015 6:17:02 GMT -5
Ugg he as t can be Google or badddd!
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Fossilman
Cave Dweller 
Member since January 2009
Posts: 20,723 
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Post by Fossilman on Jul 22, 2015 9:46:19 GMT -5
Heck of a change-is it because of the carbon in petwood,that makes the darker colors appear?
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Post by woodman on Jul 22, 2015 13:23:36 GMT -5
Heck of a change-is it because of the carbon in petwood,that makes the darker colors appear? I don't think it is carbon, in this piece the only places that changed was the healed cracks, the wood itself did not change. Would be interesting to know what was going on tho. When one is using heat to cook out oil, one has to be careful I guess. |
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grizman
freely admits to licking rocks
Member since July 2011
Posts: 878
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Post by grizman on Jul 22, 2015 17:45:06 GMT -5
Maybe, maybe not. I personally like the black line additions. To each their own, I guess.
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grizman
freely admits to licking rocks
Member since July 2011
Posts: 878
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Post by grizman on Jul 22, 2015 18:25:11 GMT -5
Ugg he as t can be Google or badddd! HuH? You said, WHAT? |
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Post by orrum on Jul 22, 2015 20:09:16 GMT -5
See that's what I am talking about!!! This cell phone does a weird spellcheck after you hit "create post"!
I don't know what that means!!!
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Post by woodman on Jul 22, 2015 20:32:29 GMT -5
See that's what I am talking about!!! This cell phone does a weird spellcheck after you hit "create post"! I don't know what that means!!! I thought you were talking in Gork! lol |
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Post by stephan on Jul 26, 2015 1:37:51 GMT -5
Heck of a change-is it because of the carbon in petwood,that makes the darker colors appear? Could be iron. The iron in amethyst changes from purple to yellow with heat. Tiger's eye changes from brown to red. Although "officially" the formu;aa for tiger's eye is SiO2 (like amethyst). I think the brown comes from iron. Another metal could also be responsible, I suppose, but those are two examples of iron. Heat-treating to change or enhance color is common in the gem world: www.gemselect.com/gem-info/heat-treatment.php |
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Post by orrum on Jul 26, 2015 7:42:16 GMT -5
I heat treat things to mske them knappable. Is that a word? Pet wood isnt one I have tried yet but I have a bunch of slabs from Kap so I might as well try some. I too like the black Woodsman.
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