A jig for holding the 3x7x5 din 705 shaft collar and 3mm rod in place for making the FGC-9 mk2 firing pin. The cutout lenght is exactly 67,50 mm. This is a beta release that has not been thorougly tested yet..if you print this and try it out please let me know of the results, tell which slicing/print settings you used etc.
Another attempt at firing pin jig, with numbers. all the numbered slots have different tolerances. if you print and try this, let me know which one of the slots worked best + your print/slicing settings etc.