The tripod mount is a plastic insert. I originally designed the camera with this insert to hold a metal nut inserted inside the baseplate of the camera. I have two files for the tripod mount: one takes a metal nut-sert, the other has the nut printed into it. I have been printing the all plastic version, as it was surprisingly strong, and I haven't had any strength problems with it. It is designed to be replaceable easily, and very cheap, should it one day wear out. If you think you're going to do some heavy lens shooting, or something like that, and would prefer the metal nut-sert version of the tripod mounting plate, please just let me know, and I'll include that plate. You'll need a standard 3/8" metal nut to go inside.