Universal Joint Z coupler

by triffid_hunter, published

Universal Joint Z coupler by triffid_hunter Nov 20, 2012
2 Share
Download This Thing! Customize Order This Printed Tools & Utilities

Thing Info

9933Views 1421Downloads Found in 3D Printer Parts
Report Thing


An experiment intended to reduce Z wobble in prusa i2 printers.

The holes are deliberately sized to fit perfectly straight off the bed. The holes in the wings should allow an M3 screw to slide through without much resistance but also without much play, the holes in the centerpiece should be super tight so you can actually cut a thread by driving the M3 screw in.

The motor shaft has a single nut trap for the flat, the threaded rod has 3 nut traps in case some alignment is needed.

8x M3x10 or M3x15 screws and 4x M3 nuts are required for each Universal Joint.


1) print
2) assemble using M3 screws
3) install
4) post before/after picture as an "I made one" :)

More from 3D Printer Parts

view more

Thing Info

9933Views 1421Downloads Found in 3D Printer Parts
Report Thing


Liked By

View All

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag. Print Thing Tag

All Apps

This App connects Thingiverse with Makeprintable, a cloud-based mesh repair service that analyzes, validates and repairs most common mesh errors that can occur when preparing a 3D design file for p...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

no more z-wobble! thanks!

It was too tight all-round for me, so I modified it a bit, see http://www.thingiverse.com/thing:234427http://www.thingiverse.com/thi...

Universal Joint Z coupler, Revised

Printed nicely on my Cube printer with only minimal clean-up afterwards. (I'm not using it for its intended purpose) Used #4-40 screws to assemble.

Have you tested it allready? Any results? Looks interesting :)

 The design is very nice. To be rigorous it is a Cardan joint, and a Cardan joint doesn't transmit the speed linearly (https://en.wikipedia.org/wiki/Universal_joint)https://en.wikipedia.org/wiki/.... But I suppose that for very little angles it can be considered a constant-velocity transmission.
Just to be precise. :)

Add a compensating Cardan like automobiles did for years.