10-20 to m8 nut adapter for thin threaded z rod

thingiverse

This component allows you to utilize a slimmer 10-20 rod with your current M8 carriage ends. It's an untested print, but the idea is that a thinner z rod would be less likely to induce print wobbles if it's not straight. The part features the inner diameter (ID) of a 10-20 coupling nut and the outer diameter (OD) of an 8mm nut. To use this, you should: 1. Print the component. 2. While still hot, insert a 10-20 coupling nut into it. 3. Replace your flexible coupling with something that grips the smaller 10-24 rod. 4. Keep using your existing x-carriage for smoother prints! To implement this, you'll need: ~26 inches of 10-20 rod. 4 extended 10-20 coupling nuts (mine are 3/4" long). Your unaltered x-axis setup. Your existing spring (if used) between your M8 nuts. A coupling mechanism to connect the threaded rod to your motor shaft. Both OpenSCAD and STL files are available, though a metric version may be more suitable for some users. Note: This design was initially intended to address potential bent 8mm rods causing z wobble. However, the actual fix turned out to be removing constraints at the top and bottom of the rods. If you still experience wobbling after that adjustment, give this part a try and share your findings!