X-axis Belt Tensioner (long remix) 3D printable model by LittleMrJ

X-axis Belt Tensioner (long remix)

Source: Thingiverse by LittleMrJ

The X-axis Belt Tensioner (long remix) is a free printable 3D model from Thingiverse by LittleMrJ. Remixed from a common & effective design, this mod is designed for beginners, who've just recently assembled their kit... You can download the STL file from the original listing below and print it at home.

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49 saves Source: Thingiverse Updated 2026-05-04

Tags: X-axis, Belt, Tensioner, (long, remix)

About this model

Remixed from a common & effective design, this mod is designed for beginners, who've just recently assembled their kit... I extended the arm by 6mm for more play. The added length may cut into maximum printing width if your carriage hits it, but I made it longer to vastly help with belt placement until a proper belt clamp is printed. Just use an extra M3 30 screw from your kit. If you already have an effective belt clip mod, and no longer need zip ties to pinch your belt together, this belt tensioner is NOT recommended. This tension arm remix also works with 8.5x13mm 16 & 20 toothed aluminum idler pulleys. This is a simplistic design, meant to be used as a disposable work-around. It only uses two small pieces which easily fit into the existing bearing block, with tension directly applied t…

Frequently asked questions

Is this 3D model free to download?
Yes. X-axis Belt Tensioner (long remix) is free to download from Thingiverse. Click the "Download free STL" button 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 LittleMrJ.
Who made this model?
Designed by LittleMrJ, 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.

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