[Jewelry making - Article 00867] - Re: [Orchid] Backsheet thicness

[leonid Surpin]

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    The thickness would depend on level of skill of controlling flame.
    Ideally, the thinner background, the better it is since metal
    granules would stiffer metal considerably, but this would depend on
    many other factors. If concern is collapsing of the background
    during granulation, it can be supported with fire-resisting compound.
    Even regular plaster-of-Paris would work. Also, consider using
    sterling for the background instead of fine silver. I am familiar
    with the literature on granulation and recommendation of using fine
    metals. You can obtain fine silver surface by using surface
    depletion. In this way you have fine silver to work with and the
    backbone of sterling to insure wearability. 

    As far as druzy, there is no reason to worry. A lot of antique
    jewellery was set with glass paste and it still around. Properly
    constructed setting is the key to stone longevity. The biggest
    stresses stone is subjected to is in the process of cutting and
    setting. If it survives these stages, it would do just fine in the
    properly constructed ring. 

Leonid Surpin
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