OK. I'll attempt to keep it VERY simple. In post #22 YOU state: "... the bondo glass isn't regular bondo. Its thickened polyester resin, it wont absorb."
From the links I posted, polyester resin absorbs water-period! It doesn't matter if it's used for lamination, is thickened, used neat or whatever. Unless it is coated with a water barrier (epoxy for example) it will absorb water IF it comes in contact with water. Just what don't you comprehend?
com·pre·hend
/ˌkämprəˈhend/
verb
1. grasp mentally; understand:
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