Is this 3D model free to download?

Yes, Anet A8 X-axis and Y-axis tensioners for 20T x 3mm toothed idlers is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by primativebowyer68, published on Thingiverse. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

Anet A8 X-axis and Y-axis tensioners for 20T x 3mm toothed idlers

Source: Thingiverse by primativebowyer68

The Anet A8 X-axis and Y-axis tensioners for 20T x 3mm toothed idlers is a free printable 3D model from Thingiverse by primativebowyer68. I decided to upgrade my Anet A8 X-axis and Y-Axis belt tensioners for 20T x 3mm idlers. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

71 saves Source: Thingiverse Updated 2026-10-08

Tags: Anet, A8, X-axis, and, Y-axis, tensioners, for, 20T, x, 3mm, toothed, idlers

About this model

I decided to upgrade my Anet A8 X-axis and Y-Axis belt tensioners for 20T x 3mm idlers. Many discussions about which is better, smooth or toothed, but I'm not going to get into that here. If you choose to go with 20T toothed, these prints will work well for you. You can get these 20T idlers from various places, Amazon, Gearbest, Banggood, Aliexpress, etc. As long as the width of the pulley is just under 9mm (pretty standard), these prints will work. Suggest to check the bearing smoothness of rotation by using the spindle bolt and nut lightly tightened, then rotation. Some of those bearings are either damaged on install or junk, so beware not to use ones that don't spin freely and get a few extras. Props go out to: X-axis tensionser concept from freemark - My design is completely new, but b…

Frequently asked questions

Is this 3D model free to download?: Yes. Anet A8 X-axis and Y-axis tensioners for 20T x 3mm toothed idlers is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by primativebowyer68.
Who made this model?: Designed by primativebowyer68, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?: Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.