Openbuilds anti-backlash nut block - printable version

This is a printable version of the Openbuilds anti-backlash TR8 nut block - https://openbuildspartstore.com/anti-backlash-nut-block-for-8mm-metric-acme-lead-screw/

How to use:

• mount where it needs to go

• loosen all screws

• insert leadscrew into the TR8x8x2 threaded hole

• slowly and very gently tighten the m5 adjust screw, until all the backlash is gone. The leadscrew should still rotate very easily, so if it doesn't, loosen the screw a little.

• now you can tighten the other two screws

Source of the original model: https://openbuilds.com/projectresources/anti-backlash-nut-block-step.153/

Print instructions

0.4mm nozzle
0.2mm layer height
5 perimeters
5 solid layers on top and bottom
supports off

Material: something hard, low friction and slow wearing. PLA works fine, ABS should be a bit worse. The ideal material would probably be Delrin.

After printing, before inserting the screws, insert the leadscrew and try screwing it back and forth a few times. It should loosen the fit significantly. Adding some grease into the hole helps too.

The adjust screw hole needs to be tapped with an M5 thread.