I have remixed fma's anti-wobble bracket as a leadscrew mount for my ACME rods, and it is working perfectly. In the end the threaded rods that came with the ATI kit were too bent to give reliable prints. You can find it here:
http://www.thingiverse.com/thing:1121898. I also ditched the classic flexible aluminum coupler and changed it with a non-flexible, self-centering design (
http://www.thingiverse.com/thing:602481). The top of the rod is kept in place with the bracket that flurin made (
http://www.thingiverse.com/thing:52388), but I'll have to redesign it as it reduces the printable Z height by a fair amount (collides with the Zmax endstop).
This was a fabulous upgrade, increasing the quality of my prints considerably. As an added bonus, the increased pitch from the ACME rods also reduced the speed of the Z motors a lot, which eliminated any stepper noise from the Z-axis (since the steppers are turning slower).
These days I am spending most of my time cleaning up the wiring, as I was still running a hodge-podge of wires until now. Replacing it with a flexible showerhose has improved the look quite a bit (and the reliability as well I'm sure!). Unfortunately any major improvements such has these have to be carefully planned, as I have no way to print parts halfway through an upgrade. I may have to get a Delta built after all
Cheers,
Ben.
- Fresh off the print!
- Installed.
- The self-centering axis coupler. Printed in PETG (HDGlass).