EnderXY - Better Belt Tensioners

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These are a direct replacement for the belt tensioners on the EnderXY.

The stock tensioners have many issues when running higher speeds/accel such as belts slowly coming loose, rattling and just overall slop.

I wanted something that was a direct swap without having to remove and adjust the belts. I will eventually make a “stubby” version as there's no need for them to be as long as they are.

I have 100+ hours tested on this design before uploading so please let me know if you find any issues.

Video of design and belt adjustment:
https://www.youtube.com/watch?v=Emo_w6sp2IM

Key Points:

• Direct swap, same amount of adjustment.
• Single M3 screw to adjust tension.
• Much finer adjustment compared to the knob.
• Zero slop with tighter tolerances.
• Zero flex.
• Idler/belt window.

Required Hardware:

• 2x M3 35mm (Can be full or half threaded).
• 2x M3 square nut.
• 4x M5 8mm.
• 4x M5 sprint nut or T nut.
• 4x M5 0.5mm washers.
• 2x M5 Nyloc nut (Use one from the stock tensioner bracket).
• 2x M5 20mm Socket head screw (Use the one from the stock tensioner).
• 2x Original pulley from stock tensioners (I use smooth ones from Mellow).

Printing:
I've orientated the parts to how they should be printed.

Installation:
https://imgur.com/Tbhy1Qi
_
Tolerances are tight so depending on your printer you may need to file some areas for fitment._

Can be a bit fiddly to install but I'd recommend you put the housing onto the extrusion first.