Elric
Well-Known Member
From personal experience, let the poured cast skin over [like lead], then tap it out. I have bad memories with letting Cerrosafe sit in a 43 Spanish for @10 minutes and it would NOT budge. I will not tell you some intermediate measures employed to get the casting out. Eventually, I used a heat gun to melt the casting out...
"We usually push our cast out within a few minutes."
During the first 30 minutes of cooling cerrosafe shrinks. At the end of one hour it should be "exactly" chamber size.
Contraction - Expansion Factor VS. Time
"Push out the chamber cast within a half of an hour after casting. If more than an hour elapses after casting before attempting to remove the cast the Cerrosafe will start to expand and will have to be re-melted and allowed to cool in the chamber to remove it. "
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Contraction - Expansion Factor VS. Time
- 2 minutes -.0004"
- 6 minutes -.0007"
- 30 minutes -.0009"
- 1 hour +-.0000"
- 2 hours +.0016"
Cerro-Safe Chamber Casting Alloy, 1lb Ingot
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