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Prusa i3 X Belt Tensioner

by thinkyhead, published

Prusa i3 X Belt Tensioner by thinkyhead Apr 13, 2013

Description

This is a simple adjustable belt tensioner that mounts on the top rod on the right end of the X gantry.

[See it in action...](http://www.youtube.com/watch?v=u8CJW0iWXlo)

Recent Comments

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What slicers have you tried? It seems fine for me using Slic3r 0.9.9.64.
When I slice this there is a gap where the screw hole is. Any tips?

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Instructions

For an adjustable tensioner you need to add a 624 bearing, a 4mm screw, and a 3mm screw to this part. It's designed for mounting on the top rod on the right end of the X gantry. Of course your x axis needs to be set up so the bottom span of the belt attaches to the x carriage. This tensioner will probably work fine inverted on the bottom rod too.

The parametric SCAD file also allows you to print a non-adjustable part at your adjusted tension. A sample non-adjustable one is included in this Thing. You can also adjust other parameters, such as wall thickness, bearing screw size, etc.
When I slice this there is a gap where the screw hole is. Any tips?
What slicers have you tried? It seems fine for me using Slic3r 0.9.9.64.
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