Let me put my tupence in on epoxy. I work for an antique wooden yacht restoration company as a carpenter. We use gallons of the stuff. This is how we do it:
1) Always wipe down both surfaces with Denatured alcohol.
2) Put a thin coat of resin and hardener, well mixt to the manufacturer's ratio and specs, on each faying surface.
3) Mix the rest of the resin with a filler. We use a product called Garamite. It is clay derived and will not cause lung problems like Cabisil or other silica based thixogens. Mix it as thick as peanut butter and apply as thin a coat as will fill the gap. Epoxy holds best with a 16th in gap.
4) Don't forget the edges of the joint, You want good squeeze out all of the way around.
5) Once the clamps are on snug, not tight, clean the squeeze out with denatured alcohol. Acetone will work but it takes the polymers to your liver.
6) Epoxy completely cured after 24 hours so wait until the next day for the next step.
7) White vinegar destroys the polymer bonds of epoxy and is the best way to clean tools and hands but don't get it on the joint.
All this being said I would glue a thin sliver of wood back on with Zap-a-gap with such a small piece of work. That is what we do when some varnish work gets damaged. Tight bond works well too.
Danny
www.woodenboatrepair.com
