Layer wobble / under- overextrusion / Artefacts - Who can help?  

RE: Layer wobble / under- overextrusion / Artefacts - Who can help?

Just to be sure, you are referring to the uneven walls?

If so, it could be the filament having uneven thickness giving uneven extrusion. The wider bands indicates that it could be the problem. Another possible explanation is infill percent and type.

If you zip and upload your project file (3mf) it will be easier for forum users to trouble shoot the problem.

RE: Layer wobble / under- overextrusion / Artefacts - Who can help?

@area51

Yes I am referring to the uneven walls. I ruled out a variance in diameter of the material because I tried different spools. Strangely the artifacts seem to be repeated on another test print in the same locations. It might be a slicing issue after all. attached you find the project file.

My Project File

Thanks again

RE: Layer wobble / under- overextrusion / Artefacts - Who can help?

Belt tension is one cause; tension must be measured rather than guessed at: and the firmware tension numbers are a waste of effort.

There are also artifacts when a print has steps in wall thickness or interior features change. For example, a layer steps from 20 seconds to 40 seconds print time. Some of this transition change has been traced to Prusa Slicer and slowing down the print speeds seems to help the most, with setting detect thin walls helping, too. Variations can also be ascribe to where a particular layer starts: seam position control can help this issue.

RE: Layer wobble / under- overextrusion / Artefacts - Who can help?

@alexgreet

Your project looks fine, except for the infill that is set to Gyroid, I would choose Rectlinear or Grid as the infill dencity is small and it works better in narrow spaces. Try "Detect thin walls" too.