ORIGINAL: BB Modss
want a better bond to plastic's? scuff the crap out of it, take a epoxy brush and lightly brush a very thin coat of acetone onto the plastic part then lay your glass on and start wetting it in!
Is the acetone just to etch the plastic, and it's okay if it dries before you put on the epoxy? Or is it to make the plastic gooey on the surface so that the epoxy will fuse with it? (In that case I'd think the amount of acetone & the timing would be pretty delicate---just a little acetone so you don't just melt the part, and put the epoxy on right away before it dries. Tricky to do, especially for a big part.)
I'm wondering if some kind of primer might be better---easy to use and give a great bond.