We're making 4' x 10' panels from 3mm AluPanel. 3" return
My thought on strengthening the fold is to add 1-1/4" angle, VHB both faces to the fold, with a small bead of Lords in the fold.
I've used Lord's to glue the angle before, but notice that it distorts the panel slightly, so we want to use tape instead
Wonder if I should skip the Lord's?