X-Belt Tensioner Anet A8

This is a simple x-belt tensioner for the Anet A8 printer.
I wanted a x-belt tensioner that fulfils following criteria:

• G2 geared tooth pulley should fit (the last tensioner I used was too small to accommodate the geared pulleys)
• pulley should be on the left side of the lead screw, because that design is more stable and needs less G2 timing belt
• it should be easy to fasten without special tools -> the 3D printed wingnut does a great job
• it should be easy to print - especially the fastening screw is so crude that it can be printed with a printer that is not very calibrated yet

• it should be stable, simple and robust
  I have tried 2 other designs before but they did not quite meet my needs and so I came up with this version. Till now it behaves great and I am quite happy with that design.

  Credit goes to thingiverse user mike_mattala for his great screw and nut library I used in this project: https://www.thingiverse.com/thing:193647

Print instructions

Category: 3D Printer Parts Summary

This is a simple x-belt tensioner for the Anet A8 printer.
I wanted a x-belt tensioner that fulfils following criteria:

• G2 geared tooth pulley should fit (the last tensioner I used was too small to accommodate the geared pulleys)
• pulley should be on the left side of the lead screw, because that design is more stable and needs less G2 timing belt
• it should be easy to fasten without special tools -> the 3D printed wingnut does a great job
• it should be easy to print - especially the fastening screw is so crude that it can be printed with a printer that is not very calibrated yet

• it should be stable, simple and robust
  I have tried 2 other designs before but they did not quite meet my needs and so I came up with this version. Till now it behaves great and I am quite happy with that design.

  Credit goes to thingiverse user mike_mattala for his great screw and nut library I used in this project: https://www.thingiverse.com/thing:193647

  Print Settings

Printer:

Anet A8

Rafts:

Yes

Resolution:

Notes:

For the screw, the nut and the fastener plate I used 60% cubic infill.

Be careful that you print the screw itself solidly or otherwise it might break after some time because it is constantly under tension.