Pretreatment of a graphite crucible

[art925]

Morning all.
I have a inherited an electric furnace for melting metals. I have had it safety tested and purchased some new graphite crucibles for its use. Question, do I pretreat the graphite crucible with borax powder in the same way as the ceramic scorifier?

Thanks so much,
Les.

[Dennis]

There's a lot of information here Les, If youncan separate the wheat from the chaff, so to speak. Dennis.
https://www.google.com/search?client=firefox-b-d&channel=trow&ei=xyRAXdq7Iv6I1fAP2J6viAk&q=tempering+a+graphite+crucible+for+jewellers&oq=tempering+a+graphite+crucible+for+jewellers&gs_l=psy-ab.12...18053.35130..40271...0.0..0.160.1819.21j2. .....0....1..gws-wiz.......0i7i30j0i8i7i30j0i7i5i30j0i8i30j0i30j0i2 2i30j33i160.OsyBkm1qSnQ&ved=0ahUKEwiau9iJwNzjAhV-RBUIHVjPC5EQ4dUDCAo

[art925]

Thanks Dennis, the consensus appears to be 300 degrees in the oven for about an hour to drive out moisture then coated with borax.

Cheers.