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Y-Belt Alignment Helper for Prusa MK3 Bear Upgrade

by motocoder Dec 23, 2018
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Ok, yeah. I'm not surprised, as the MK3S came out after this part, and Prusa introduced several compatibility issues with 3rd-party components with that release. There should be no issues flipping it back as you have.

Yes, I reverted and moved along. BTW, I did use the other jig to align he rods. That one works great.

Did this issue prevent this jig from working? I would think the alignment of the belt hasn't changed. Or does Prusa now have the belt shifted in the X direction?

By following your direction, reversing the pulls on the shaft, and using the jig, resulted in the interference between the mk3S y belt tensioner and the motor mount. I couldn’t tell you if prusa shifted the belt since this is my first printer.

Ok, thanks for taking the time to let me know.

You're welcome. Thank you for the other Prusa bear upgrade designs. I've use a few of them.

I believe that there is a fundamental issue if you reverse the gear on the X-axis motor as you suggest (to move the teeth lower in the motor axle). The idea of minimizing the torque in the axle is good. However, at least on the MK3S X-axis belt tensioner there is an interference issue. The calibration will fail because the tensioner hits the X-axis motor. I ended up reversing the gear again and leaving it as stock. Did I miss something int he directions?

Did you mean to say Y axis?