Prusa i3 X-Axis Tensioner
thingiverse
I designed this so that I am able to fine-tune the tension in my x-axis belt. The stock pulley is installed in the tensioner and an M3 nut is placed into the end of the tensioner, which slides into the slot in the axis mount. An M3x25 screw with an M3 washer then goes through the back of the axis mount, into the back of the tensioner, and mates with the nut. Then, simply turning the screw pulls the tensioner closer to the back of the axis mount, pulling the pulleys back, and increasing the tension in the x-axis.
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