Another Anet A8 X belt tensioner

thingiverse

I needed an X-axis tensioner with minimal A8 modifications, and specifically no longer belt. This setup should work seamlessly with the stock belt, and it certainly works flawlessly with a Prusa reinforced belt which is just a bit wider. It also attaches to that half-hearted screw that normally holds the belt to the carriage. Some pictures show how it's mounted in place. Now that I've got it installed, it operates smoothly, although I suspect the bottom of the tensioner rubs slightly against the lower rod. If that becomes a problem you can simply reduce the dimension in that axis - the M3 bolts will still fit perfectly.