This is a X end idler tensioner compatible with E3D toothed idler.
| Part | Quantity | Comment/Link |
|---|---|---|
| Bear X axis | 1 | From version 0.6.0-a and greater |
| E3D Gates 2GT Toothed Idler, 6mm Belt, 20 Tooth, 5mm ID | 1 | E3D ljnk |
| Dowel pin, dia: 4.95mm (+0.00/-0.05), length: 15.8mm (+0.00/-0.05) | 1 | Must fit the 2GT idler bearing. 📌 Cut a M5 screw if you can't find one |
| M3 Hex nylock nuts (DIN 985) | 2 | Same as original Bear X end idler tensioner |
Download all optional parts with the button at Repo Homepage -> Optional Parts -> Official optional parts
Warning
The parts have been designed and tested with the parameters below and it is important to follow them to avoid issues like part cracking, bad bridging, not enough stiffness or wrong tolerances. You must calibrate your extrusion multiplier before printing the parts.
You can use the default PrusaSlicer print profile 0.20mm QUALITY @MK3 with 4 perimeters and 5 tops/bottoms layers and 20% infill. Otherwise, here are the parameters we recommend:
- Slicer : PrusaSlicer
- Nozzle size : 0.4mm
- Layer height : 0.2mm
- Infill : 20% Cubic or 20% Gyroid
- Number of perimeters : 4
- Number of top/bottom layers : 5
- Default extrusion width : 0.45mm
- Perimeters width : 0.45mm
- External perimeters width : 0.45mm
- Support : No
- Brim : No
- Detect thin walls : No
The parts are designed for PETG and this is what we recommend. Please consider recycled filament and cardboard spool or masterspool. If you are using a different filament material you will need to account for the shrinkage in XY plane directly in the slicer.
| Part | Quantity | Filament | Color |
|---|---|---|---|
| x_end_idler_tensioner_e3d | 1 | PETG | Any |
Thanks to Matthew Humphrey for having created the first version of this idler. thingiverse.com/thing:3308226
What has changed from Matthew's design:
- Improves shape and tolerances around the E3D idler
- Derivation from the original design (using Fusion derive feature)
This is the exact same design than the on the BearExxa V1 and the CAD files are available on the BearExxa V1 GitHub1 repository.