Printrbot + y axis belt bracket tensioner

by 69911e, published

Printrbot + y axis belt bracket tensioner by 69911e Jul 3, 2012



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Improved y axis bracket belt tensioner with a screw adjustment.
Uses original mount screw locations. You will need longer screws.


The belt goes through the slot on smaller piece around the "t" and and back through the other slot. Insert it into the large bracket which uses the same holes as the original and use a screw through the hole to tighten.
The large block is asymertical. The rectangular hole is off center to allow the belt to run perpendicular to the bed. Check alignment and reverse if needed.
I printed the small piece with support material.
Large piece printed with 30% fill.

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Thanks! Everything works and fits perfectly!

Noob question if anyone has time to answer:

How do I print the second part without the arrow drooping? In slic3er I enabled support material checkbox but it did not seem to work

This looks like a bug with Slic3r 0.9.8.

Downgrading to SLic3r v0.7.1 shows support via Pronterface whereas v0.9.8 and v0.9.9 do not

Wonderful! Much better than the part that came with the printer. Easy to print, easy to install, works great. Nice design.

Came out great! Thanks for this. The only problem I had is my holes are a little sloppy so I had to file open the slot for the T-bar. Really works well.

great job on the tensioner! this guy was an easy print and easy install. just two simple parts...what else would you need?! thanks for the simple fix to an annoying problem!

Amazing tensioner, keeping y belts tight was a big problem for me, this alleviated all of it. Great design too, any news for an x belt tensioner from you? :)

Awesome tensioner.  Elegant and beautiful.  Need to turn on supports for the bracket

Works perfectly! Thanks very much.

Simpler than the one that was developing in my mind. Thanks for sharing.

You could even modify it to have a spring. That way you wouldn't accidentally put too much tension on the belt and cause it to stretch = skip on the motor.