what I'm looking for. What are they made of? There are things called
crucibles, salamanders, scorifiers and fletchers!!! One company is
selling a "melting dish" for platinum made of some sort of silica.
By what you mention, it should serve you well. Platinum simply, by
my reckoning, is tested for higher temperatures than you may need
(much better than the converse).
This is what I use, and used at school (not high backed at school
School time (http://www.contenti.com/products/casting/170-710.html)
Now (http://www.contenti.com/products/casting/170-712.html and
Don’t forget to prime the “Melting Dish”/“Crucible”… heat with
flame (your torch), sprinkle borax, heat until melted, sprinkle
more, and repeat until there is a good covering of
glassified/liquefied borax over everywhere the molten metal will
touch (including pouring spout).
When using, place clean material (no solder) into the crucible, heat
until molten, continue heating (especially pouring spout, while
pouring into ingot) so as to get a good flow.
Preparing ingot is what I suggest as well. When using oxy/acetylene
I simply have only acetylene only and flash the ingot where the metal
will pour into (the black soot issued will put a light covering that
will act as a resist to aid in removing the poured ingot after it
cools). I use a light oil, set aflame, and put out when using
oxy/propane so as to make a layer of soot for the same reason as
Best of luck and practise makes perfect,
K. David Woolley
Diversiform Metal Art & Jewellery