• 3D Model


Added: Jan 18, 2018 06:43
Author: Thiago Borges
License: Creative Commons - Attribution


An Anet A8 y-tensioner kit for a 2017 printer with 8x8mm holes and spaced 12mm in z-axis. Remixed from the sources mentioned below and with the following features:


Separate left and right "arms" to print without support
Left and right arms with small inset and outset so that the pulley spins freely
Fits tight and don't bends when tightening the bolt
Fixed some non-manifold pieces to improve slicing in Slic3r 1.3
Arms mixed from: https://www.thingiverse.com/thing:2149867
Bolt mixed from: https://www.thingiverse.com/thing:2264586
Plate original from: https://www.thingiverse.com/thing:2264586
Pulley original from: https://www.thingiverse.com/thing:2138421

Print Settings


Anet A8






See notes below


See notes below

Resolution and infill by piece:
Pulley, the most critical: 0.1mm, 100% infill
Bolt and plate: 0.2mm, >= 20% infill
Arms: 0.3mm, >= 20% infill



The left and right arms are designed very tight, and some sanding is needed. Carefully sand and insert them into the panel until it fit, without struggling the front panel. It is essential that they not bend when tightening the belt, maintaining the belt-motor-pulley geometry.

Bolt and plate

The bold need some effort to fit into the plate the first time. Mine, at 0.2mm, fits nicely after the first time, neither too tight nor loose.


File name File size
LICENSE.txt 192.00 B
README.txt 2.91 KB
SOURCES.txt 276.00 B
files/y_belt_tensioner-frame_right.stl 25.77 KB
files/y_belt_tensioner-plate.stl 118.05 KB
files/y_belt_tensioner-pulley.stl 211.02 KB
files/y_belt_tensioner-screw.stl 431.33 KB
files/y_belt_tensioner-frame_left.stl 25.77 KB
images/e45a6d565a4a1a96dde9b0c076f37928_preview_featured.jpeg 63.12 KB
images/086209fd214c92702b61760f3e424dc8_preview_featured.jpeg 40.25 KB
images/3cf0a31f4e6654b539c976726da1b237_preview_featured.jpg 38.59 KB
images/376cc7a51ef6cef9885cbc47221838a0_preview_featured.jpeg 46.90 KB
images/6f666c82168106c32670d3ceb4304a4a_preview_featured.jpeg 39.19 KB
images/1a86d63b9de43f3018df1474fe06255f_preview_featured.jpeg 35.26 KB
images/ae8b0b7822e5127e8c4d5036685aaf21_preview_featured.jpg 33.74 KB
images/96679149ce8e34c4cf1e690901645219_preview_featured.jpg 35.27 KB
images/14c54cc055dcf2f7f299da82ca61d1b8_preview_featured.jpeg 39.02 KB
images/e70bee44e916818f8e2d89c17bdfde68_preview_featured.jpg 30.39 KB
images/18e725406e0a33ce6233b1bf6fb5f637_preview_featured.jpg 32.33 KB

Leave a Reply