[Jewelry making - Article 00039] - Re: [Orchid] [Source] Vacuum casters

[Ken Kotoski]

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    Hi Alma, We may be able to help with both issues. First I'll answer
    your questions then tell you what we have. We repair the equipment
    jewelers use and we know from experience which equipment is good and
    which is not. 

    The side draw bell jar is preferable in the event of accidental
    overflow/spilling of investment. The straight bell jars have the
    vacuum drawn down through the table and if investment gets spilled
    or boils over the top of the flasks it can get sucked into the lines
    and pump. When this happens the unit has to be taken apart and can
    take several hours to clean and get running again. This won't happen
    with the side draw units. 

    The two table units are preferable because the casting chamber is
    made to handle blowouts if they should occur. In other words they
    capture the bulk of the investment and metal before it can get to
    the vacuum lines. 

    As for the Ney spin caster I would have to say they probably over
    fluxed their melt and had too much metal. They may have overheated
    the metal as well. With an electro-melt you don't ever flux the
    metal so you don't have this problem and you pour the metal so if
    you did have too much in the melter you don't have to pour all of it
    in the flask. You will also be able to melt enough metal for several
    small flasks at the same time in the electro-melt. This can speed
    casting because you don't have to wait for the metal to melt for
    each flask. 

    Now, we have a used Rio vic 12 unit that is selling for $650. It has
    the 'Assistant' which can be removed easily and we warranty the unit
    for 6 months. It uses a 5 cfm vacuum pump so you will get better
    casting results and better fills. It's in very good condition and
    will save you a few hundred dollars. 

    Also we have a new 30 ozt manual electro-melt  we used for display
    at a show and we are selling it for $499. It has a full one year
    warranty on it and comes complete with stirring rod and crucible.
    This will also save you a couple hundred dollars. 

    If you are interested in these or have other questions let me know
    by email or calling toll free 1-877-262-2185. 

Ken Kotoski
MPG Repair
www.mpgrepair.com

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