So my house has a super janky wall box. Very out of code, on an old exterior brick wall, and stupidly shallow. It has been an open hole for 3 years. Finally got an electrician out and they basically said “if you fix this, it’s gonna be a billion dollars” (which I anticipated).
Most 3d printed filament isn’t fire safe. If you used PLA, PETG, ABS etc you created a hidden unsafe condition where the plastic will melt or catch fire making it more unsafe than leaving it in the open air.
My brother, boxes are made from ABS. If your electrical box is getting even remotely warm, you’ve got something wrong.