My only thought would be that rather than just a straight hole id I would reach up in there with a ball shaped burr and create some rings or grooves for the epoxy to fill in. That way you will have your bond in the thread relieves of your studs as well as in the grooves. It only takes a couple minutes, and may be overkill... but short of the epoxy crumbling it will not pull out.
I have read that JB has an insanely high shear strength and it is readily available in many forms.
After reading your post again I gather that you wanted to drill/tap the epoxy. My offering was meant to mount the stud in epoxy. Make sure you have alignment though if you go that route.
Last edited by Roberts68; 08-23-2012 at 12:44 PM.
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