You can buy threaded inserts (see video below) but that means some other piece of hardware to have to stock in your shop. [PeterM13] had a different idea: Cut a piece of threaded stock ...

Heat-set inserts are stock parts that add threads to a part made from a thermoplastic. Since 3D-printing relies on oozing plastic out of nozzles, literally every single 3D-printed material fits ...

While not as robust as metal inserts, self-forming threads are a practical choice for many functional designs, particularly in projects where ease of assembly is a priority. Metal Threaded Inserts ...