Terrible prints on a Prusa- assembled MK3S+
I bought an assembled MK3S+ that arrived yesterday. Out of the box it's printing terribly. There are layer inconsistencies along the X-axis, as seen in the below image. The Y-axis sides of the cube are perfect. Only the X-axis sides have the issue. I have an older MK3S as well, which prints great.
So far I have run the XYZ calibration and 1st layer calibration. I've also checked the belts with the Prusa tension meter ( https://www.prusaprinters.org/prints/46639-tension-meter-for-the-gt2-belts-of-i3-mk3s-or-prus) that was properly printed. The X-axis belt was very loose, so I tightened it to specification of the meter. In the picture below you can see a small improvement after the calibration and belt tension adjustment.
Any other ideas? I'll reach out to support after the holiday if I'm unable to resolve the issue by then. The test cubes are printed with PolyMaker PolyTerra PLA.
Best Answer by e1miran:
I wish I saw your post earlier. After being on a support chat and searching more on the forum, it turned out to indeed be a grub screw that was not fully tightened on the flat side of the Y-axis motor shaft.
RE: Terrible prints on a Prusa- assembled MK3S+
I would check the flex to all axes. Also, check each site where you have a gear and grub screw to make they are not loose and one of the screws is against the flat side of the drive shafts.
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Chuck H
3D Printer Review Blog
RE: Terrible prints on a Prusa- assembled MK3S+
I wish I saw your post earlier. After being on a support chat and searching more on the forum, it turned out to indeed be a grub screw that was not fully tightened on the flat side of the Y-axis motor shaft.
RE: Terrible prints on a Prusa- assembled MK3S+
I wish I saw your post earlier. After being on a support chat and searching more on the forum, it turned out to indeed be a grub screw that was not fully tightened on the flat side of the Y-axis motor shaft.
It happens all the time. They can loosen too.
--------------------
Chuck H
3D Printer Review Blog