[Jewelry making - Article 00320] - [Orchid] CAD/CAM grown model woes

[richard hart]

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Enlighten me please.

    I have resisted using Cad Cam preferring what I knew. I recently had
    a job, thought I would make my life easier. Sent the picture of a
    ring to a Cad Cam guy. 

    Got a nice grown model back. Gave it to my caster, a very
    knowledgeable whlosesale jeweler I have worked with for 15 years. I
    asked him to call the Cad Cam guy and get specifics of how to burn 
out
    as there are issues with ash from this material. 

    Since I am in the middle between new technology and old school, I do
    not want to be part of the problems with new technology and new
    problems. My caster followed the directions, and the casting came out
    with a loss of detail where the ash remained. My caster had suggested
    to make a mold from the grown model, I said I would like to avoid
    that, but if it was necessary, do it that way. 

    Theoretically my caster following Cad Cam guys advice should have
    produced good results. My caster relied on the CAD CAM guys info to
    use the model and avoid problems. . Caster had to laser weld to fix
    problem I would not have if I had a wax carver make the model. 

    So, in the future, make molds of the grown models? There was no
    saving of time or money using CAD/CAM. Just a new problem. How you
    those who use grown models deal with this? 

Richard Hart
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