Note: Also see the increasing belt tension procedure if you're interested in doing that instead.
This is essentially a mix of the Qidi Max 3, and the Qidi Q1 Pro belt adjustment procedures.
Loosen the 8 belt tension clamping bolts on the rear of the Plus 4. See the photos below.
About 3 full turns anti-clockwise on each bolt is sufficient to release their clamping pressure.
Following the pattern shown in the photo below:
Rew-tighten the belt clamping bolts, and re-run the Input Shaper Calibration procedure
(Better description to come)
- Remove the spring loaded auto belt tensioning devices.
- Shim the larger of the spring tensioning buckets with M5 washers
- Screw the belt tensioning device back into place on the printer.
- Perform the belt tension adjustment procedure as above.