Layer shifting

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ProjectBox
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Joined: Wed Apr 23, 2014 3:16 am

Layer shifting

Post by ProjectBox » Mon Mar 23, 2015 12:28 am

Greetings,

I have been printing nonstop for the past three months and I am just getting this X axis layer issue. Below is the progression of the shifting.
1.jpg
1.jpg (65.29 KiB) Viewed 3504 times
2.jpg
2.jpg (65.85 KiB) Viewed 3504 times
3.jpg
3.jpg (71.51 KiB) Viewed 3504 times
4.jpg
4.jpg (65.69 KiB) Viewed 3504 times
So as you can see this is the same model with the same gcode. At first I thought it was an issue with the Z axis since it was always the same places that the printer is shifting. But the Y axis is still perfect. Any thoughts on how I can fix this issue? Should I just lubricate the X axis and see if that fixes the issue? I already looked at the grub screw on the X axis and it is still secure.

Thank you!
Last edited by ProjectBox on Mon Mar 23, 2015 2:03 am, edited 2 times in total.

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jimc
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Location: mullica, nj
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Re: Layer shifting

Post by jimc » Mon Mar 23, 2015 12:57 am

the pictures are so small its hard to tell but is the shift happening on the exact same layer each time you print it?

ProjectBox
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Joined: Wed Apr 23, 2014 3:16 am

Re: Layer shifting

Post by ProjectBox » Mon Mar 23, 2015 2:02 am

jimc wrote:the pictures are so small its hard to tell but is the shift happening on the exact same layer each time you print it?
I have updated the pictures, and yes you should be able to see them better.

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jimc
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Re: Layer shifting

Post by jimc » Mon Mar 23, 2015 2:10 am

well it does look like its shifting in the same place. i cant be 100% sure. you will have to take measurements and see if its happening on the same layer. if it is then that is a sign that there is a problem with the gcode. does it do this with other gcode files or just this one? layer shifts are usually from nozzle collision or dragging. this can be from part warping or over extrusion. this can also be from your acceleration and or xy movenet speed too high. s3d had it defaulted to 18000. i found this to be a little high. i had problems a while back with this issue. once i lowered my acceleration to 1000 and my xy movement speed to 9000 i havent had a single skip since.

swbluto
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Joined: Mon May 25, 2015 7:09 pm

Re: Layer shifting

Post by swbluto » Sat Jul 18, 2015 1:04 am

I had this same problem and I found out the set screw on my stepper motor wasn't secure enough so I loctited it down and it's now good.

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innkeeper
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Location: New Windsor, NY

Re: Layer shifting

Post by innkeeper » Sun Jul 19, 2015 5:42 am

what is your travel speed set to, could you possibly be skipping steps?
M2 - MKS SBase w Smoothieware, GLCD, 24v, Upg Z & extruder stepper - IR bed leveling, Astrosyn dampers X/Y/Z, MIC 6, Zebra, PEI, & glass Build Plates - E3D, V3B Hotends, & more - many other 3d printers - production printing.

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PcS
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Location: Michigan

Re: Layer shifting

Post by PcS » Sun Jul 19, 2015 12:19 pm

if it has also been three months since you have checked your z height and bed level I would suggest starting there. Especially if you normally have success printing large long prints. If this is your first large longer print bed leveling is more crucial for larger and longer prints. :D

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