smaller pin diameter on the stepped shaft is 4.5mm... I don't think this will work for anything smaller than say 20mm
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note to self... do not attempt to make small fasteners out of PLA... this was an attempted push-fit hinge pin but it just broke as I was attempting to put it together. Enough interference to ensure a snug fit means you have to apply enough pressure to make the fit to break it.pic.twitter.com/GR7g5hZTXc
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Idea was to do something like this... the two parts are 5mm thick and the hole is 5mm diameter, so this was a 15x10 pinpic.twitter.com/pjmYUiQidq
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This is just a model and in the real build I'll obviously be using a metal shaft or something, but I was trying to do a quick and dirty test assembly and didn't have a suitable metal pin thing handy
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End of conversation
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The layered / barely fused nature of filament printing does uncover likely shear points.
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Yes ... They don't offer strength . As an alternative you can make the 3d design slightly hollow n while printing reaches sufficient depth introduce a thin metal cylindrical rod or straightened steel from hooks for strength but rather use regular fasteners instead
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did u Taper the pin towards the end and put a similar Taper in the orifice. Also u should put a Fillet around that Base where the orifice Intersects it.
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