[Jewelry making - Article 00485] - [Orchid] Setting Freeforms

[William Denayer]

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    Dear All, A while ago I found a litle article on the net
    (www.acstones.com) by Derek Levin about setting freeform gemstones.
    In order to make the bezel, he proposes to use substances which are
    normally used by dentists to make mouth impressions for crowns. Two
    products are necessary: Alginate, which a sort of rubberized
    impression material, and Van-Rock, which is a hard plaster. The idea
    is to push the stone in the Alginate, to fill up the impression with
    Van-Rock and to go on working with the plaster replica of the stone.
    I have been looking at a couple of dental catalogs (von Schein,
    Zahn). While Alginate is quite cheap, Van-Rock is not so cheap and
    can only be ordered in a large quantity (11 lbs.). Of course, I do
    not need 11 lbs. One or two lbs would be sufficient. Does any of you
    uses this technique to set freeforms? If not, which technique do you
    prefer? I know that it is possible to make the bezel in wax, but I
    find this complex. If anyone would use Van-Rock (or something
    similar), would it perhaps be possible to buy a little quantity?
    Thank you for reading, and with best regards, Will 



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