ArtMetal

I find the costs of crucibles to be minimal to the costs of everything else, including the gases and just general other parts of casting.

So I simply use a different crucible for each different metal. As far as preparing each one for use, just pre heat it slowly and hold it for awhile before the big heat. I do it in the very furnace I'm using for the final use but do a series of on's and off's over a period of several soaking hours. These are rather large crucibles, with the main ones being #100 or ones that will melt 300# of bronze per melt. For smaller crucibles the time is much shorter. bpfink