[Jewelry making - Article 00014] - Re: [Orchid] Casting temperature for non-tarnishing silver

[Darryl MacLeod]

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  Hello Surbhi

    By non tarnishing silver, do you mean fine silver?  I cast some
    today.  (It was only my second time for fine silver) ...By the
    books it has a higher melt point than sterling (1760 give or take
    a few degrees) I was a bit confused because according to my 
    temperature readout it began melting at about 1730. Anyhow , I
    have always understood the rule of thumb was to add 100~150
    degrees from melt point to flow point. I had good results today
    at 1830. 

    I should point out that over the years I have relied less on what
    some books say and more on my own experience from trial & error.
    My flask temperatures are also higher than what I have seen as
    recommended temperatures...(typically about 1200 degrees) 

    Another rule of thumb for flask temperature is to cast at 500
    degrees less than your pouring temperature (depending on which
    book or school of thought you are following) good luck (that's
    important too) 

    Darryl MacLeod of  Nova  Scotia 


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