RE: Help for making a plug from foam
Issac,
sand the plug to desire shape, to a smooth surface. Then lay your cloth using epoxy resin. Do not use polyester or your plug will melt. Sand, fill pin holes with a good light catalyze putty, spay a coat or two of epoxy type primer. Sand, check for more pin holes, if any sand, when everything is perfect, you can polish your plug. Then you can prepare parting board for the female mold. For any other tips go to composite forum. A lot of info there. Hope this help.
Happy Holidays,
Alex