[G-Bear]

Uhhh.....I've had a jar of this stuff on my welding cart for about ten years now. Use it to protect one piece from overheating while welding another piece to it. Available from Brownell's, or any good welders supply.

[Prodigal Son]

Uhhh.....I've had a jar of this stuff on my welding cart for about ten years now.

So what is it and how does it work?

[dljordan]

I used the same stuff when making knives. When I soldered on a finger guard I would smear this paste around the blade to keep it from losing it's temper.