View single post by Michael R
 Posted: Mon Mar 31st, 2014 10:36 pm
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Michael R

Joined: Sun Jan 19th, 2014
Location: Virginia Beach, Virginia USA
Posts: 12
You could do a combo of cardboard and foam.

Use an assembled box as the core and the foam around it to carve out your rocks, or use plaster molds to get the rocks.

Also look at the expanding foam in a can around a cardboard box.

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