Hi John et al,
I hate to say something's impossible, but casting ~anything~ but
pewter with that torch just might be. If you're going to take up
casting, you'll need a big, hot torch any and all the time anyway.
BTW, there are those who say that casting copper is not possible.
That's not entirely true, but it's not a good metal for casting
either, that's for sure.
Well not exactly impossible, but I wouldn’t use that model torch.
That TS4000 will melt gold, silver and copper, but not in an open
crucible, this will work :-
I use an earlier model of the BZ8250HT (the JTH-7 Bernzomatic hose
torch), and I use use propane.
I melt gold, silver, copper, bronze, and various other mixtures of
those with no problems at all.
The secret (and it’s not a secret at all) is to contain the heat
long enough to melt the metal.
There is no chance in hell that a JTH-7 will melt precious metals in
an open crucible.
Regards Charles A.
P.S. Platinum in definitely out with the micro furnace setup.