I made this to hang up my camera and swivel tripod mount on the top Ender rail bar. Everywhere I read advised against using a printed thread for various reason but I designed it and tested it for strength. I made it small so you can fit multiple mounts if needed. I used a standard 1/4-20 UNC thread size so it should fit most tripod threads that are 1/4". The part itself is only 1" in length and printed beautifully and I couldn't break the thread so it'll definitely hold*.
Settings: To get a perfect "hi-res/accurate" thread, I printed it at .08mm layer height and a speed of 45 mm/s. 100% infill. No supports.
I bought the swivel mount so that I could use pretty much any camera.
Here's the Amazon link: https://www.amazon.com/gp/product/B00X5QO3B8/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
*Just as a warning, results may vary. I printed the same piece using a copper PLA and the threaded screw easily snapped off. (stress test it before you put it on, you don't want it breaking and leaving the broken thread in the hole. If that happens, just heat up the tip of a small flat head screw driver with a lighter and then melt it into the broken off piece. When it cools a little, just unscrew the broken piece out.)