It is easy to go overboard in fixing issues.
Ender 3 might be "the wrongest printer" to buy - it has so many issues and fixes, right?
This one is yet another attempt to eliminate belt overstretching on the extremes of motion. This comes from the belt geometry from the factory.
I tried to bring the belt to be as parallel to the motion over the entire motion range.
The parts are held in place by the belt tension alone. I am yet to see if i will need to dab a drop of glue or not.
To install the X axis shim unmount the carriage by loosening the wheels and release the tightening idler. Once the assembly is back on the frame tighten the belt moderately and see if it binds on the extremes of the motion. While doing so observe if the shim is moving in it's place. If moves, dab some glue in between it and the carriage.
Likewise install the Y axis shim.
I printed the parts I am yet to see how it fares. Fell free to try and report. I will soon too.
Other members attempts I've found so far (in no particular order):
https://www.thingiverse.com/thing:3927291
https://www.thingiverse.com/thing:4544816
https://www.thingiverse.com/thing:5548917
Good Luck!
| Ender3-DD-Fire-Hounds_Belt_Fixer_X_Axis.stl | 18.4KB | |
| Ender3-DD-Fire-Hounds_Belt_Fixer_Y_Axis.stl | 12.4KB |
