Pulley String / Wire Guide

Pulley style string/wire guide with 3 degrees of rotation.  Tree supports gives this kind of model the success to achieve.  Printed in-place as one piece.

Model currently in use for last 3 months (since Feb'23) to support an home-antenna for Helium miner to help provide a guide for the fishing line to a small winch.  Initial idea was to have a few of these connected to provide wire guidance through long lengths and some interesting angles, in the end due to length of line it ended with winch not far off.

In some ways this was an experiment to see how far I push 3D printing design with the benefit of tree supports. Initially started with bracket with rotating wheel and then added further degrees of rotation and then finally a guide to centralise wire over the wheel.

I've printed this on MK3 and X1C and both have been successful.  There is .3 / .4 tolerance between moving parts and this is designed with .2mm layer height.

Printed with PLA+, .4mm nozzle, .2mm layer height with tree supports from build plate.

Removing tree supports is relatively easy and enjoyable.  The wheel can be quite tight (annoyingly so) but once freed the overall works.  Added 2nd STL with holes in wheel to provide some force leverage.

Underside isn't pretty but nothing a bit of sanding or exacto knife can't cater for, but to be honest focus was on the functionality of the part and printing with minimum of fuss.