[TheForge] Playing with bronze

Wed May 22 13:55:01 2002

Thanks- I've forwarded it to the guy who needs it ;-) I've never done much
casting, but my roommate, the Squid, does, and he's forever dragging home
dead submarine parts....

Phlip

----- Original Message -----
From: "Jay Yeates" <[email protected]>
To: <[email protected]>
Sent: Wednesday, May 22, 2002 1:30 PM
Subject: RE: [TheForge] Playing with bronze

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> From: [email protected]
> [mailto:[email protected]] On Behalf Of Phlip
>
> * ... Does anyone have suggestions for a reusable mold media for
> alloy b bronze. I have alloy b, alloy c, and some generic silicone
> bronze, as well as copper, monel, and k-monel. I am interested in
> small casting such as buckels, belt plates, and saddle brasses.
>
>
> ...
> for fine detail, in a batch process, silicon slip casting is a
> option.  it's not reusable per se ... but cheap per unit and allows
> eaxt multiples, though the up-front tooling can be pricy
>
> * make the master out of wax (requires basic wax carving tools & wax)
>
> * make a mold of the master using a vulcanizing press (press &
> vulcanizing media)
>
> * using a wax injector, make as many copies as item you want to cast
> (wax injector & wax)
>
> * attach the wax's to the master sprue (wax sprue stock and sprue
> base)
>
> * dip sprued "tree" in the silicon slip until a good shell is built
> up
> (silicon slip & vat - large trashcan and a low rpm mixer to keep it
> liquid)
>
> * burn out the wax from the "tree" in a burn-out oven (large burn out
> oven)
>
> * bury the shell mold in sand (for support)
>
> * melt bronze (melting furnace, tongs, crucibles & safety gear)
>
> * pour bronze
>
> * let cool
>
> * break away the silicon from the cast items
>
> * cut items from sprur - sprue goes back into the casting pile (heavy
> cutters)
>
> * take items to your finish bench and process per desire (polishers,
> picks, ultrasonics, etc)
>
> process works for small items up to large statues .... complex
> process, but great results.  several good books out on the process,
> look around online
>
> 'wolf
>
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