Shifting on y-axis

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Agoodevans
Posts: 6
Joined: Tue Sep 22, 2020 12:32 pm

Shifting on y-axis

Post by Agoodevans » Mon Dec 14, 2020 5:00 pm

I bought an A30 pro recently. I Had some initial minor problem with x- axis moving. Tightened grub screws and have calibrated machine and getting good accuracy on 50mm cube in PLA.
Todays problem:
Printing ABS E=245, Bed=110. Using Cura 4.8. I'm now getting good quality finish and layering is no longer brittle but after about 5 hours of printing the machine starts shifting in the Y-axis producing diagonal slots in my ducting instead of vertical. Well the whole job is progressively shifting forwards. Initially I thought the Extruder was hitting the end of the job as I was having trouble with warping at each end. I have now solved the warping by adjusting temperatures, cleaning bed and adding a Brim. The first part of the job looks great but it then destroys itself.
If anyone could help that would be appreciated as I've run out of ideas. Yes I have checked the belt and grub screws.
Thanks in advance.
Attachments
DuctAttempt2.JPG
DuctAttempt2.JPG (174.03 KiB) Viewed 3092 times
DuctAttempt1.JPG
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DuctAttempt 3.JPG
DuctAttempt 3.JPG (163 KiB) Viewed 3092 times

Agoodevans
Posts: 6
Joined: Tue Sep 22, 2020 12:32 pm

Re: Shifting on y-axis

Post by Agoodevans » Sat Dec 26, 2020 9:21 am

Hmm. No replies but I've done some research. Looks like it might be the same problem as the Creality Ender where the Extruder fan is turned off when using ABS but this also turns off the controller cooling fan. Works fine with PLA. I'm off to confirm this theory.

Agoodevans
Posts: 6
Joined: Tue Sep 22, 2020 12:32 pm

Re: Shifting on y-axis

Post by Agoodevans » Sat Dec 26, 2020 11:06 am

Checked it out. When printing ABS code E.Fan off, Controller fan is definitely on. So I'm assuming I have a y-axis stepper driver issue. Time to contact support unless someone can point me in the right direction.

Agoodevans
Posts: 6
Joined: Tue Sep 22, 2020 12:32 pm

Re: Shifting on y-axis

Post by Agoodevans » Mon Jan 04, 2021 12:08 pm

I think I've fixed the problem. The four manual bed adjusting threaded rods under the bed were loose. I've tightened then and i think it's fixed the issue. I rotated the print job 90 degrees so I haven't done exactly the same print but I think it's solved.

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