SiC no, Clay graphite yes it does need to be seasoned, or more
properly heated before to rid it of any built up moisture. I always
place my crucibles be it SiC or CG or steel pipe on top of my furnace
for a bvit to heat them up and drive off any moisture......

Another thing you need to do is place a small piece of cardboard under
the crucible bottom (between furnace bottom or plinth block and
crucible. This will turn to carbon, and prevent a SiC type crucibnle
from sticking to the plinth blocks etc. Just a small piece of
cardboard from like a shoe box etc will work fine........and it does
not hurt the melt.

Nothing like having a SiC crucible stock to a plinth block.

On Mon, 31 Jan 2005 02:21:53 GMT, "TomNBanderaTx"
wrote:

===Ok, newbie casting question, I read somewhere that you need to season the
===crucibles before melting metals in them. Anyone know if this is fact or
===fiction? Thanks in advace. T
===


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