[Jewelry making - Article 00025] - [Orchid] RTV mold deterioration

[brent a glasson]

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    I have made RTV molds of finely-detailed pieces (closed filigree).
    To eliminate air-bubbles during injection, I pre-paint the receiving
    surface with hot wax. However, the surface of the mold starts to
    degrade very rapidly and only a few usable waxes are produced. The
    waxes get increasingly 'furry', indicating micro-tearing of the
    surface of the mold. Possibly the painting is causing the wax to
    adhere too closely to the surface.  Could anyone suggest a product
    that could deal with this problem? (I have been using Dow Corning HS
    11 ). Thank you. Brent Glasson 


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