[Jewelry making - Article 00442] - Re: [Orchid] Wax Injecting issue

[LEESSILVER]

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    I have experienced injection wax not filling details.  Instead of
    sharp edges on the wax pattern I had rounded edges.  My solution was
    to inject at a lower temperature which is counter intuitive.  You
    would think hotter wax would flow better and fill the small details
    better. Not so.  Hotter wax will produce less detail and air pockets
    on the surface of the wax. 

    The hotter the wax, the more it sticks to the mold.  Do not allow
    the wax to stay in the mold any longer then necessary.  The longer
    the wax stays in the mold the more it will stick. 

    I put talcum powder in an old sock. A couple of taps on the inside
    of the mold with the sock will put some powder on the surface. 
    Residue powder can be blown out. I find it is best to have a heavier
    powder coating on all the parting surfaces, (not the design
    surfaces). I feel this provides minute gaps in the mold parting
    surfaces to allow the air to be eliminated. The use of a small
    brush, as mentioned on a previous post, to put powder on the parting
    lines is a great idea.  You learn something new from orchid every
    day.  

    I agree with Tess.  You may have to cut lines into the design to
    provide a path for the air to escape. 

My 2 cents.
Lee Epperson 



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