In a message dated 4/30/2000 10:38:05 AM Pacific Daylight Time,
[EMAIL PROTECTED] writes:
> Brownel's (of gunsmithing supplies fame) has a product that is a paste,
> specifically designed to be a heat soak called Heat Stop
There is a product put out in the jewelry trade known as Ruby Sand. It must
be pretty much the same thing. When you heat it up it gets hard but will
wash off with water. As long as you don't get it too hot it can be reused.
It is great for holding parts together and also if you heat it up to the hard
state you can do small castings in it by pressing masters into the wet
material.
I got my supply at Quartzite a few years ago but I have seen it in Rio Grande
jewelry supplies catalog www.riogrande.com They call it garnet sand.
Incidentally if you ever want really high content and high temp silver solder
get hard solder from a jewelry supply. Commonly used is 75% silver. Also
jewelry supply places sell annealing pans, about 12" in dia. with small
pieces of pumice in them. Very good for heat reflection.
Bob
