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Question regarding chamber casting
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gnoahhh
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posted
I came into an ingot of a Bismuth alloy called Ostalloy. It has a melting point of 156deg., and from what I can glean from googling it one of it's characteristics is virtually no shrinkage when it hardens- like Cerrosafe. Has anyone here ever used it as a cerrosafe substitute?
 
Posts: 332 | Location: Annapolis,Md. | Registered: 24 January 2006Reply With Quote
ramrod340
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Picture of ramrod340
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quote:
characteristics is virtually no shrinkage when it hardens- like Cerrosafe

Key issue is Cerrosafe shrinks for the first 30 minutes or so then expands back to chamber size. I tried to use another low melting point alloy twice. Got it out once second time I used it I had to melt it out. Cerrosafe is hard to beat.


As usual just my $.02
Paul K
 
Posts: 12881 | Location: Mexico, MO | Registered: 02 April 2001Reply With Quote
Jim Kobe
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quote:
Originally posted by gnoahhh:
I came into an ingot of a Bismuth alloy called Ostalloy. It has a melting point of 156deg., and from what I can glean from googling it one of it's characteristics is virtually no shrinkage when it hardens- like Cerrosafe. Has anyone here ever used it as a cerrosafe substitute?


I would think, if it has virtually no shrinkage when it hardens, you might not be able to get it out without remelting it.


Jim Kobe
10841 Oxborough Ave So
Bloomington MN 55437
952.884.6031
Professional member American Custom Gunmakers Guild

 
Posts: 5521 | Location: Minnesota | Registered: 10 July 2002Reply With Quote
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