[Jewelry making - Article 00405] - Re: [Orchid] Wax Injecting issue

[Ken Ferrell]

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    In order to get raised letters to fill in it may be necessary to
    vent the molds, Assuming that you are using either a Vulcanized mold
    or the Ferris see through mold compounds , usually wax won't stick to
    Vulcanized or RTV silicone, try lowering your wax temperature and
    increasing your pressure a bit. I remember when we still used hand
    pumps that we also used mold clamps rather than trying to hold the
    mold between pieces of 1/4 inch masonite or aluminum, We recently
    experimented with a blue carveable injection wax from Rio Grande
    that gave us lots of problems with sticking to nearly all our molds
    even the silicone and temperature didn't seem to have much effect. Rio
    does make some clamps to hold your molds together and they work
    reasonably well, but the first thing I would try would be lowering
    your wax temperature, then vent the mold by cutting with your scalpel
    several lines just cutting in to the edge near the top and out to the
    sides cut about 1/3 to 1/2 way through the half of the mold then use
    jewelers talcum power or in truth any un-perfumed talcum dusting
    powder in these vent cuts. Another good wax that we Have used is the
    westcast pink from Rio. Is has good memory injects nicely at moderate
    pressure, and has a pretty quick set time we use it at about 135 to
    145 and sot everything from thick conchos to Filigree brooches And
    rings the only drawback to this wax I Have found is it's a wee bit
    hard to read for old eyes. First though I would check your wax
    temperature, and do the vents also hold your pressure a little
    longer. You can get a candy thermometer pretty cheap , just don't try
    to set your vulcanizer temp with it (they break) 

Good luck 
Ken  www.chickasawsilver.com 



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