I did have some problems before in using this epoxy in bonding the metallic bail to the fusion glass cabochon.
Main problem arise from the fact that I used acetone, not only for initial cleaning and de-greasing the metallic bail and the glass cabochon (which is good) but as well, in cleaning the excess of the epoxy adhesive near the bail etc. So, using the acetone after you used the epoxy, it will affect the resistance of the epoxy overall. So, if you want to remove the excess of the epoxy, wait for 60 min, to have the initial bonding (still not completely cured) and use some q-tips dipped in isopropyl alcohol to remove the excess adhesive on and around the bail and if you stained somehow the glass cabochon. This alcohol will remove the excess semi-cured adhesive w/o weakening the adhesive structure under the bail as acetone might do.
So, as steps into bonding you better do this:
1. The glass area to be bonded to the bail, must be roughened with a diamond abrasive bit mounted in a rotary Dremmel or jewelry rotary tool. After you scratch the surface under the bail, you will roughen, as well the surface of the metallic bail.
2. Clean both the glass and the bail with a kitchen paper towel dipped in acetone or isopropyl alcohol, until the glass is screeching clean
3. Put the mixed epoxy, both on the bail and glass as well, with a clean toothpick, then use an office clamp to press the bail on the glass or other method
4. Put it away and do not touch for an hour
5. Remove the clamp and then clean with a q-tip dipped in isopropyl alcohol the excess of the adhesive on and around the bail
6. Put back the clamp and keep it so, for 24 hours
7. Now if still places with some hardened epoxy, clan it with the cutter and then with some acetone, but take care to not touch the bail, or under bail.