Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

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Danny G.
 
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Default melting old trophies

hi group:

Just purchased a box of busted up trophies - all made in China. I
tried to melt one with a propane torch which would usually melt zinc
very easily. The trophy would not melt - just turn pasty - and not
flowable at all- and impossible to separate any scum out with a liquid
button. This metal is pure junk for casting -- or can it be saved with
some type of flux - or possibly a 50% mix with clean new zinc added. It
would be nice to be able to use this stuff for pour casting as there is
a lot more available, but as it looks like --this metal was possibly
pressure cast in China with a cheaper mix of metal alloy ... as it looks
black on a cold break as compared to silver with pure zinc. Can it be
saved?

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Joe AutoDrill
 
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Default

I'm not sure about how useful they are, but you can get boxes of them for
free here in the NE. Any trophy store will usually have them lying around
or have people walking in with them asking, "Can you use these?"

--


Regards,
Joe Agro, Jr.
(800) 871-5022
(908) 542-0244
http://www.AutoDrill.com
http://www.Multi-Drill.com

V8013-R


"Danny G." wrote in message
...
hi group:

Just purchased a box of busted up trophies - all made in China. I
tried to melt one with a propane torch which would usually melt zinc
very easily. The trophy would not melt - just turn pasty - and not
flowable at all- and impossible to separate any scum out with a liquid
button. This metal is pure junk for casting -- or can it be saved with
some type of flux - or possibly a 50% mix with clean new zinc added. It
would be nice to be able to use this stuff for pour casting as there is
a lot more available, but as it looks like --this metal was possibly
pressure cast in China with a cheaper mix of metal alloy ... as it looks
black on a cold break as compared to silver with pure zinc. Can it be
saved?



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