Anet A8 PLUS Y-Axis Tensioner

thingiverse

*** This is designed in mm. If your slicer expects inches when you import this, it will be very tiny and you will have to scale it by 25.4 (2540%) *** The stock Y-Axis tensioner on the A8 plus was a definite improvement over the original A8, but still left a LOT to be desired. This fixes all of the issues I had with the tensioner. It has 20mm of adjustment, clears the stock bed and parts, keys tightly to the extrusion frame, allows to easily upgrade to a GT2 pulley if desired, and has not lost tension after hundreds of hours of print time. You'll need: (1) M6x1.75-40 button head screw (1) M6x1.75 lock nut (3) M4x0.7-10 button head screws (the extras from the Anet kit will work) (3) M4x0.7 T nuts (the extras from the Anet kit will work) (1) GT2 Timing Gear (optional) (1) M3x0.5-20 socket head screw (1) M3x0.5 nut It's pretty self-explanatory how it goes together. The M6 locknut fits into the groove in the "screw" part, and the M6 screw threads through the "anchor" into the nut. The pulley slides into the slot on the "screw" part and is secured by the M3 hardware. The assembly is then bolted to the frame using the M4 hardware and t-nuts. You'll have to slide the T-nuts in behind the tensioner, as it's keyed too tightly to attach the nuts to the tensioner and then fit it to the frame.