tel
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Tel, is crucible wash the same as refractory wash? I have no idea what either of them are, read it before though. Can you make your own? do you need it with clay graphite crucibles?
Brock
I only use it on the steel ones Brock. Take around 25% Borax and 75% fireclay, add enough water to make a creamy slurry and to got it. Paint it on, inside and out and let it dry properly before use - you'll probably need to re-do it every 3 or 4 melts.