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Old 05-15-2017, 04:17 PM   #1
316Composites

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Default Mold Help!!

All the molds I have made, have been pretty basic. No complex shapes, my next project is shaped like a crescent/moon and is only 2 inches wide. I'm trying to find the best materials to support the part or fill the gap. I attach a pic done in paint as an example. Not for sure if I should use expanding foam, foam block or poster board to fill the gap.

Thanks for any help!
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Old 05-15-2017, 09:59 PM   #2
Hanaldo

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If all it needs to do is support the object then use whatever you like that's easy. If it were me, I'd use a block of plasticine or something cheap to fill the bulk of the space, and then filleting wax on the edges to get a nice smooth radius.

That said, why not bend the polypropylene sheet to the same shape as your part and make it much easier for yourself? Polypropylene bends very easily with a bit of heat, or you could switch to core flute which is also easy to curve to that shape.
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Old 05-16-2017, 12:21 PM   #3
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I figured out how I'm going to do it any other ideas would help, but not need at this time.
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