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:

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 idler from stock tensioners (I use smooth ones from Mellow). Printing:

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

Installation:

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.