This forum is intended for interest gauging and active runs. Due to the transient nature of this forum, please keep all research and ongoing discussion in one of our main forums so your information is not lost.
Only Premium Members can start a new run.
I recommend 3M Outdoor Adhesive Tape.
I can second this. I used a small piece of the stuff to attach a 1" threaded pipe end to a hole that was slightly too big to actually thread on a different project and I can't pull them apart.Totally holds. You line the entire back of the brackets. I swear the metal will give before the tape does.