"Smooth" layer shifting and gaps between infill and outline?
 
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[Solved] "Smooth" layer shifting and gaps between infill and outline?  

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Jelle Medema
(@jelle-medema)
New Member
"Smooth" layer shifting and gaps between infill and outline?

Dear Prusa community, 

Just getting into transitioning my ender 3 print farm to Prusa MK3S+'s. 

Installed my first kit, ran the self test and no issues. However, I'm getting two issues with the test prints: 

1. "Smooth" layer shifting: this whistle should be straight. All I can find about it online is layer shifting that should look a lot more like a staircase effect. 

2. Gaps between infill and outline. Internet tells me to slow the print down, but I'm guessing an official prusa test file should be able to run at max speed? 

If someone could help me fix these issues I'd be super grateful. I'm loving Prusa so far and it looks really promising. 

Kind regards, 

Jelle 

Best Answer by Neophyl:

Check your motor pulley grub screws are on the flat and tight.  Its pretty common for them to not be put on correctly and if the 2 set screws aren't done in the correct order they can work loose and wobble on the motor shaft.  This leads to slop in positioning as the belt moves back and forth. 

With both loosened the first must be flat and perpendicular to the flat on the motor shaft as its is tightened.  Once that is tight then you tighten the second.  This acts to secure the first.  Its why they are often called 'set' or 'jam' screws.   Giving you a wavey perimeter.  Once you have them correctly done you can use a thin sharpie marker to mark the position on the shaft and pulley with a line, that way you can more easily tell if they are loose in future.

Posted : 30/09/2022 1:23 pm
Neophyl
(@neophyl)
Famed Member
RE: "Smooth" layer shifting and gaps between infill and outline?

Check your motor pulley grub screws are on the flat and tight.  Its pretty common for them to not be put on correctly and if the 2 set screws aren't done in the correct order they can work loose and wobble on the motor shaft.  This leads to slop in positioning as the belt moves back and forth. 

With both loosened the first must be flat and perpendicular to the flat on the motor shaft as its is tightened.  Once that is tight then you tighten the second.  This acts to secure the first.  Its why they are often called 'set' or 'jam' screws.   Giving you a wavey perimeter.  Once you have them correctly done you can use a thin sharpie marker to mark the position on the shaft and pulley with a line, that way you can more easily tell if they are loose in future.

Posted : 30/09/2022 4:05 pm
RandyM9
(@randym9)
Reputable Member
RE: "Smooth" layer shifting and gaps between infill and outline?

+1 what @neophyl said.

Be sure to check both X any Y motor pulleys.

Posted : 01/10/2022 4:12 am
Jelle Medema
(@jelle-medema)
New Member
Topic starter answered:
RE: "Smooth" layer shifting and gaps between infill and outline?

Thank you so so much. Worked like a charm! 

Posted : 01/10/2022 7:17 am
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