Elite Knight Helmet Pins Remix
When doing my make of CultosaurusErectus' Elite Knight Helm, I was using PLA which did not play nicely with the original pin design. They kept breaking instead of flexing when trying to push them in. Instead of buying and printing a more advanced and flexible material, I remixed it to be two parts that slide together and friction fit to hold the visor on.
I recommend printing with a high Infill% as depending on how tight they fit together after printing I had a few that broke trying to pull them apart again, so the extra strength may help, or just do some careful test fits and sand slightly as needed before using with the full Helmet Assembly.