Ender 3 Max Y Tensioner
thingiverse
This is a 4040 vslot y tensioner designed for my Ender 3 Max. It uses the original bracket but adds a thick end cap to the 4040 vslot. I have also swapped out the original y belt pulley on my machine and I am using a gt2 idler pulley which is 8mm wide. You will need to drill an 8mm hole through the original bracket for the bolt to pass through. This then pushes up against the end cap placing tension on the y belt. You can then tighten the original brackets screws once your tension is good.
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