What did you mount [using blind, tapped holes]?
Things I know will get very little lateral/shear force applied to them. They're best for things put on a supported structure, not so good to support an entire faceplate. I'd have to test a 500 module.
Overdo the holes (add more than four) to spread out the force as much as possible, I say.

For example, concerned about the below volume knob, as it will get plenty of use. All 6 hex standoffs are secured with loctite. But if someone was to put something heavy on it, or banged on it downwards, I'm hoping the breadboard will break, not the threads/encoder.

Minus button caps, monitor controller faceplate is ready to be installed. Engravings need backfilling, but for whatever reason, one of them was milled very shallow and powder has taken it all up, so it needs to get send back to FPE for re-engraving but...I'll worry about that later. Much to do.
