[Jewelry making - Article 00060] - Re: [Orchid] Casting copper recommendations?

[Weiss Linda]

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Hi Jeff; et al.;

    Try to  contact the manuf of the copper electrical wire,  they
    should tell you the % & purity of the copper. High quality, with very
    controlled manuf. electrical wire can be .9999 % pure 

    But I do not think it is safe to assume  all copper electrical wire
    is that pure - there are always cheaper, poor quality 

    selections in most every market. Even without the beryllium, you
    should avoid breathing fumes from molten copper. -20 

    It really is advisable to obtain and read an MSDS for every
    substance you use-  if you make a habit of purchasing with a written
    P.O. document - it is easy to have a line permanently imprinted at
    the bottom that states "all products ordered should be shipped with
    an MSDS".  Try to Fax or e-mail  written P.O's for everything  - if
    you do place a phone order, request an MSDS at that time, and follow
    up with a faxed written PO./. 

    Most MSDS are available somewhere on the web - it really is not that
    hard to pull one up and check out if there are any potential
    hazards. 

Linda Weiss
www.lindaweiss.com


 
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