UM S5 deep verical stripes on printed cylinder.

[Janek 1]

I made test print with UM S5. Sliced with Cura 3.4.1. Left Nozzle 0.8AA (blue)  and Right 0.4AA (green). Printed with PLA, settings are predefined by Cura, except layer height is 0.1mm. Cylinder inner diameter is 10mm and outer is 15mm.

0.4AA Nozzle printed very deep identical stripes around outer perimeter of cylinder. These are ca 0.3mm deep. What is causing this issue?

[gr5 2,271]

Please change the colors in cura to show the different line types and make them all visible.  Is it doing non extruding moves (the blue lines) a lot in that area?  Maybe make sure to turn off "coasting" and possibly "outer wall wipe distance"?  Maybe.  

 

I'm really just grasping at straws here.  But I would print a test cylinder and make sure it is still doing this strange issue and then see if changing some settings corrects it.

 

I'm not familiar with this particular issue.

[Janek 1]

It is not related with coasting and wipe distance as the stripes are identical around the outer surface of cylinder.

Picture from the other side.