A couple more Mexican Obsidian

[Zuma]

I got into that green obsidian
and couldn't stop
It's been heat treated.
I need to treat some more.
Zuma

[bjrogg]

That is some pretty stuff Zuma. Is green obsidian real obsidian? I didn't think you could heat treat obsidian. I thought the volcano did that.
Bjrogg

[Trapper Rob]

Looks good Don.

[Stringman]

Bj, sometimes the glass is too brittle and tempering it actually makes it more workable.

Nice work Don

[bjrogg]

Thanks Stringman, I never knew you could temper obsidian. Sometimes it flakes nice but seems to crush when I try to finish up with pressure, just seems a little weak. Would that be a case for heat? Sorry to high jack your post Zuma.
Bjrogg

[Zuma]

Thanks Scott, Good info
BJ hijack away. These threads are about sharing.
Thanks for your input.
This is an old thread I did about this material
shortly after I brought it back from Flint Ridge.

80 pounds of dry obsidian
Page 17
Zuma

[Knapper]

 

[wizardgoat]

First I've read some obsidian is improved with heat treating. Lots of my mahogany type stuff is very brittle and tough to get a point from, I'll try to cook some

[Zuma]

First I've read some obsidian is improved with heat treating. Lots of my mahogany type stuff is very brittle and tough to get a point from, I'll try to cook some

Let us know how you make out.
Temps/times etc.
Thanks Zuma