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belt tensioner - T5 - made for a printrbot on Y axis

by ghunt, published

belt tensioner - T5 - made for a printrbot on Y axis by ghunt Sep 21, 2012
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5752Views 1660Downloads Found in 3D Printer Parts

Summary

Belt tensioner originaly created for a modified printrbot.

Instructions

Two differents belt type can be used: T5 or T2.5, download the dedicated stl file.

Add a M3 screw (30mm+ )
Put daddy part in mommy part
Add any M3 washer and nut on the scew

If your print is not clean or the belt doesn't want
to be inserted in the belt-hole use a screw driver to enlarge the hole in the same time, it work fine.

Update: tens-T(2.5/5)-40mm are 40mm long and the belt can slide a bit better in the hole...

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5752Views 1660Downloads Found in 3D Printer Parts

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I made these. they work ok but there are some issues. one serious issue is that they do not allow the belt to sit high enough (closer to the bottom of the bed) thus the belt is not able to run straight. a slight change to allow the belt to run closer to the bottom of the bed would be great. also the mounting holes are just slightly too close together - i was able to force the bolt through the top on a slight angle to get it in place but on my printer the mommy part mounting holes could benefit being 0.5mm wider, even 1mm to allow for more wiggle room.

otherwise i am printing with them now. they enable the belt to be quite tight - much tighter than possible with the stock clips

ghunt - in reply to plexus

For the belt, I have actually a modified version of the printrbot, in my case it works quite well, but you're right I should find a way to get the belt higher.
Holes problems noted.
Thanks for the feedback, I'll do that next week.

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