Bob, I like the Robart hinges and I use the 30 minute epoxy too. If using the large ,3/16 dia, hinges I drill the hole and use a Dremel Abrasive stone which is shaped so the cone fits in the hole some and taper the cone above that to accept the larger hinge point area. You get a closer fit that way plus it creates a well for the epoxy to pool in when smearing it in the hole. Another trick I use is heated vasaline to soak the hinge point in before using the epoxy. I have a metal lid vasaline jar which I fashioned a coat hangar cradle around the lid and used a candle to heat the vasaline in. I let the epoxy partially cure and exercise the hinges a couple time being careful not to move the out of alignment. Never had one fail.
Frank