[https://lithophanemaker.com/](https://lithophanemaker.com/) has some great tools for generating .stl files, including a light box maker.    These pendant light sockets work great, unfortunately the lithophanemaker tools only generate a hole with a lip and do not support the socket.  [https://www.amazon.com/gp/product/B01M5F3DA2](https://www.amazon.com/gp/product/B01M5F3DA2)

The electronics in a 40W equivalent LED bulb can reach over 70°C which is not good if it touches PLA.  I created a holder for the socket to hold it in place using two M5x0.8 bolts.  The threads are loose enough to print at 0.20mm height and work well, just run a bolt in and out a few times to knock off any high points.  The threads are at 15mm and 30mm from the build plate and centered on the socket hole.  Aligning negative volume cylinders on a new print works best.  If you have an existing box and would like add a brace, I included a drill template for alignment, I recommend a drill press if you have one.  

I printed 0.20mm layer height, PETG to have a bit of give in the threads, I haven't tried PLA yet for this brace.  Five perimeters, again to have enough material around the threads.  It may work with less, I am not a print speed demon and a bit of extra time is okay for me.  No supports needed, print with the threads pointing up.