To those of you who have inset ABS or PVC threaded plumbing fittings in cremation urns, did you use epoxy or some other adhesive? Specifically, what kind of epoxy? I don't have a lot of experience with it and some of my projects that used it failed, like the shaving brush that came off the handle. That was the cheap little squeeze tubes from HF. Do the syringes at the big box stores work? What is the shelf life of the unused product after opening the syringe? Would the same product be appropriate for filling small voids?
Thanks for any advice.