AnyCubic i3 MEGA Y-Tensioner 3D printable model by ltlowe

AnyCubic i3 MEGA Y-Tensioner

Source: Thingiverse by ltlowe

The AnyCubic i3 MEGA Y-Tensioner is a free printable 3D model from Thingiverse by ltlowe. I've been looking for a Y-Belt tensioner for the AnyCubic i3 Mega for a long time so I finally designed my own. You can download the STL file from the original listing below and print it at home.

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65 saves Source: Thingiverse Updated 2026-04-15

Tags: AnyCubic, i3, MEGA, Y-Tensioner

About this model

I've been looking for a Y-Belt tensioner for the AnyCubic i3 Mega for a long time so I finally designed my own. The base mounts with two of the bolts for the Y-rods to avoid having to drill holes in the case to mount the base assembly. (the original M3x8 might work, but I used longer M3x12) The idler pulley should be mountable with original bolt (M5x16) and nut but it is very close. M5x18 works better but is not a common length. M5x20 is just a little too long and scrapes the case. I plan to make another carrier without the indent for the bolt head to see if I can get a common bolt to fit perfect, but there have also been reports that the original bold has worked fine for some prints. I am actually using the original bolt and no nut, and it has been fine, but securing it with a nut would d…

Frequently asked questions

Is this 3D model free to download?
Yes. AnyCubic i3 MEGA Y-Tensioner 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 ltlowe.
Who made this model?
Designed by ltlowe, 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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