The stock tensioner solution for the Creality Ender 5 works but is annoying and imprecise. I tried several brands I saw suggested on forum and was not happy with how small the idler were. I finally tried the Befenbay ones. While the idler is smaller than the stock it works rather well. My only complaints are that I wish the knob was larger for easier turning and I had to slightly tilt the bracket at and upward angle so that the belt was centered better for my Y axis belts.
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