[Jewelry making - Article 00075] - Re: [Orchid] Sand Casting Advice

[nicky]

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Hello Brian

    I have not done all that many sand casts but I had a good experience
    with: Delftse gietmethode (this is a Dutch word / trade mark, and I
    didn't find an English translation for it). 

    It is sand that seems saturated with ( motor?) oil. It makes the
    sand sticky and keep shape very well. 

    The cast is done in two frames.  You can buy special rings for this
    but a tin can will do the same if you align them properly and have an
    uneven ridge in the rim (this will help separating the two halves,
    the rim will grip the sand to split in two) Fill the bottom half
    with the sand, 

    -Place your object (I usually make this from polymer clay but
    anything would do) pushing it in the sand. 

    -Dust the surface with talcum powder this is important it acts as a
    barrier between the top and bottom. 

    -Place the other frame on top and stuff it with sand. (make a mark
    on how they sit with a marker so you can replace them exactly after
    removing the original) 

    -Hammer the whole lot tight. 

    -Break the to frames away from each other (the talcum powder helps
    to separate the two) 

    -Take away the original that you placed in there. 

    -Make a pouring funnel and air vent holes in the top part of the
    mould (I'm sure your father can help you on these it you don't know
    how to do them). 

    -Replace the top exactly to the marks from the marker. 

    -Heat the metal that you want to pour 

    -Pour the heated metal quickly in to the pouring funnel 

    -Break the cast 

    -Take out and cool your casting. 

    -Scrape away the sand that has gone black. 

    -Keep the rest and put it away air tight u can re use it the next
    time 

    I'll include a picture done by this method all parts where cast
    individual and later soldered on to wire 

    Front: http://tinyurl.com/re4ef 

    Back http://tinyurl.com/lf6xx 

    Any further questions feel free to mail me 

Nicky
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