Quote:
Originally Posted by tangolima
I have no experience casting bullets. I'm just curious.
Cutting oil has boiling point of about 600F. Casting temperature is way above that. Is it possible to heat up the mould to, say, 700F to drive the oil out of the "pores" and evaporate it? Keep cleaning with solvent doesn't sound very efficient or even effective.
-TL
P.S. I don't cast but I do own a mould, for making hot glue bullets. For that I need to oil the mould, which is opposite to casting lead bullets.
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It is possible that casting bullets in an oil contaminated mold will produce an ash/burned-on stuff instead of cleanly evaporating... I will not swear to it though. Nevertheless, I have found no problems with Lee Aluminum molds that have had the oil removed with Brake or Carb cleaner.