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Mold questions

Old 01-01-2009, 01:48 PM
Randy Etken
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Default Mold questions

What do you use for indexing pins to alien your molds? I have been using marbles and wanted to know if there is something different and where do you buy? Also when I join the two mold halves, I hold them together with 8-32 machine screws with wing nuts. Is there something to replace the wing nuts that would be permanent? Just curious what others use.
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Old 01-01-2009, 02:02 PM
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Default RE: Mold questions

First with the molds screwed together, usually before you pull it from the plug, I would drill a I have drill a #7 hole through both flanges, at least 3 places. Seperated the mold halves, pull out the plug and tape the bottom mold flange for a 1/4-20 fastener. Drill out the top half of the mold to 1/4". Now using a full threaded hex BOLT screw them up through the flange and glass in the head. Pretty much a perfect fit everytime.
Old 01-01-2009, 06:45 PM
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Default RE: Mold questions

What has worked for us are 1/2 spheres of various shapes purchased from craft stores. Note pick something that you won't have a difficult time cleaning the female side when waxing and using.

Old 01-06-2009, 08:19 PM
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Default RE: Mold questions

What I used were the self adhesive rubber/plastic door bumpers like the ones on the inside of your kitchen cabinet doors so they so not bang when closed. The come in all sizes and shapes, hemi-sperical, round-flat, square, etc.

Place them onto the parting board and remove them after you mold the first half. Wax and PVA the hole and lay the other half of the mold. The alignment is tight. In fact the 2 halves snap together.


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