[Jewelry making - Article 00114] - Re: [Orchid] Cement-like gunk on castings

[James Binnion]

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    Sounds like you may be overheating the investment and it is breaking
    down and fluxing. This is something I have seen on high temperature
    metals like bronze, nickel white gold or palladium white gold
    castings when there is just too much heat for the standard gypsum
    bonded investment to deal with. What metal are you casting? 

Jim

James Binnion
jbin AT mokume-gane.com
James Binnion Metal Arts
http://www.mokume-gane.com
360-756-6550
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