[Jewelry making - Article 00043] - [Orchid] Colores Epoxies and Polyester resins

[Bruce Ogilvie]

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    Hello: In response to several questions about Colores epoxy resin and
    polyester resin I offer the following information. Always obtain MSDS
    (material safety data sheet) information with all chemicals you use
    in your home or shop. Epoxy resins by nature are not toxic nor are
    they flammable. They are classified as skin sensitizers and should be
    used with good housekeeping and general cleanliness procedures. Avoid
    ingestion. Check your MSDS sheet for specific remedies. Polyester
    resins are both toxic and inflammable. They need to be used with
    great care, consult your MSDS sheet. Pigments disbursed into epoxies
    and polyesters are different by nature and will not cross distribute.
    They may appear stable at first but will degrade over time and cause
    problems such as browning and color-shifting. Do not mix
    pre-pigmented polyesters with epoxies or vice versa. They polymerize
    differently and will cause endless grief. Both polyester and epoxy
    resins can be static cast into RTV rubbers. Epoxies must be cast into
    RTV's specifically designed for epoxies to insure greater mold life.
    Mass media finishing can be used but hand polishing yields best
    results. Do not use oil impregnated compounds but ones designed for
    polishing plastics. I hope this helps Bruce Ogilvie

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