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if your part drafts anyway

Gene Olson - Monday, December 31, 2007 - 8:06pm

if your part drafts anyway as it would have to for a metal mold, why not make a metal master a 1/4" thicker in the plane of the mold line and then weld it into a 1/4" match plate and let a commercial foundry sand cast the parts. Much faster, probably cheaper.

If you are only making a few pieces, (i'd gues under 10) it might be less hassle to just make a master with draft and let them hand pack it.

We just made a sand mold for a guy and on a 16 x 22 - 18# al part the foundry charged him $135 ea for 3 parts.

can you acquire and melt the al for that?

Gene Olson
Sculptor
Elk River, MN


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