[alarie]

As Trayder says, you will have no problems with epoxy coming off a waxed surface, especially if the table is smooth. We do this all the time with quick molds, some of them just wood covered with packing tape and a coat of wax! If you are at all nervous, you can leave the last coat of wax on the surface, unbuffed, and it will pop right off. Let the epoxy reach full cure (10-12 hours at 65 deg for West) before you try to release; for some reason it is harder to release a partially cured part...

Good luck,
Peter