I designed a 2x2" PCB that will have a 2.5" square component soldered to it, and I plan to have a row of these assemblies mounted to a plexiglass backing. What's the best way to mount them? I put some mounting holes in the PCBs, but once assembled, the larger component will cover them. If I socket the larger component, the whole assembly will be too thick.
I'd like to just put the screws through the mounting holes before soldering the component on, but once I have a spacer around the screw, I won't be able to stop it from turning while I try to tighten the nut.
I even thought about gluing nuts to the component side of the PCB, but if the glue breaks, I have a metal nut bouncing around my delicate electronics and no way to reattach it.
Thanks for any suggestions.