i am trying to make a globe of 50 cm in diameter with fiberglass by hand spun. Honestly i tried many times by using inflatable beach ball but while i spun the fiberglass wet with epoxy it started to slip over ball. Whatever i did, i couldnt avoid sllipping. Is there any way of avoiding slipage ? Better to make a PU mold , fiberglass mold or else? What i need is that fiberglass should not slip over the mold and should not stick to the mold neither. Anyone have idea or expri@ence may help?