Dan,

 

My problem seems to be porosity in the mold, more than the wax not releasing.  Bondo, or any other polyester fillers seem to be porous.  When I rub the wax on the Bondo, it turns darker, indicating that it's "soaking in".  The epoxy seems to find its way through the wax and into the filler.  I made a seat pan yesterday; two BID, with 3M Lightweight Filler, and Maquires, and it ripped most of the Bondo off the mold.  The mold is repairable, and I can sand the excess stuff off the part.

 

I'll repair the mold and apply some polyester primer/surfacer to seal it before I do another layup.  I think the idea of sanding and getting a glossy surface before applying the wax is key.  The epoxy can't stick to really slick surfaces like packing tape.

 

I checked the Internet for "Chemlease".  At www.compositesworld.com they list no less than 40 companies that make mold releases!  Where can I buy Chemlease in something less than a 55 gallon drum?  I'll check some of the links.

 

Mike