Adjusted/remixed bushing screw for 3D-Printed Yarn Winder model originally by BGDglider

This is a remix of the gear-mounting bolt for the wonderful yarn winder model posted by BGDglider. The original model worked well for me with one exception: each screw that holds the drive and middle gears in place ("gear-screw-shorter-head.stl") had too small of an outer diameter where passing through the bushing of the model “wheel-spacer.stl”, creating unwanted “wiggle room” around the screw and allowing the gears to unmesh and slip under load.

This remix modifies the original gear-mounting screw ("gear-screw-shorter-head.stl") in three ways:

1. adds a smooth shank for the section of the bolt in contract with the bushing

2. uses a larger diameter in the smooth shank section to reduce lateral gear wobble (threads remain the same)

3. adds a screwdriver slot to make it a bit easier to tighten or remove the screw

All other parts of the original design are the same; see the original design by BGDglider for the model files.

The screw can be printed standing up with no supports if positioned so the head of the screw is flat on the build plate.

Suggested print settings: 

• infill: 50%

• layer height: 0.20mm

• avoid crossing perimeters: true

• scarf joint placement: Everywhere

• automatic infill combination: true

• extra perimeters if needed: true

• bottom fill pattern: Archimedean chords

• Speed for non-print moves, travel: 75mm/s