Purge Belt

Purge Belt

This Purge Belt helps automatically remove purged filament during filament changes. Powered by a stepper motor, mounted on the side of the printer frame, it transports the purged filament out of the printer, preventing overflowing purge buckets and keeping the printer interior clean.

The belt height is adjustable via a screw with a spring. The spring not only allows for fine-tuning but also acts as a safety feature: if the nozzle accidentally hits the belt, the arm moves down to prevent damage.

🔹 Benefits:
✔ Keeps the printer interior clean
✔ Prevents overflowing purge buckets
✔ Safe operation with spring-loaded mechanism
✔ Easy to mount and adjust

🔹 Required material:

1x Nema 17 Stepper Motor 
1x Gt2 20t Pulley 5mm
1x Closed Loop Belt 400mm GT2
6x Bearing F695 ZZ 
2x Bearing 623 ZZ 
1x Spring 0.6x5x15mm
4x Bolt SHCS M3x8
1x Bolt SHCS M3x25
1x Bolt SHCS M3x16
3x Bolt BHCS M5x20
1x Bolt BHCS M5x10
1x T hammer Nut M5
 

🔹 Recommended print settings:

Layer height recommended: 0.2mm.
Extrusion width recommended: Forced 0.4mm.
Fill Type: Grid, Gyroid, Honeycomb, Triangle or Cubic.
Infill percentage recommended: 40%.
Wall count recommended: 4.
Solid top/bottom layers recommended: 5
 

🔹 Updates
12-2025 Added: Purge_Belt_Main_Body_By_Scops_Owl_Designs_v2  
This updated version provides 5 mm of additional adjustment range for the stepper motor, allowing the purge belt to be tensioned more accurately and securely.

Huge thanks to my friend Eytecz for making this work!  
The configuration and Python script can be found on his GitHub: 
🔗 https://github.com/Eytecz/xPloreSystem/tree/main/xPloreCore/PurgeBelt/Software