Underextrusion and VFAs increasing with model height
Hello everyone.
I am experiencing some very strange behaviour from my Prusa Mini.
Seemingly increasing with model height, I get very strong vertical surface artefacts and also very strange underextrusions in corners. Here is a picture of a flowerpot that I printed in vase mode, which shows this effect all over.
The first ~5 cm of the model are splendid, but with increasing model height, the quality decreases massively.
What could be at fault here and how can I fix it?
Some added details: My Printer stands on my balcony in an enclosure, which is basically just an IKEA IVAR cupboard with doors. I has been there for years, so I don't think the resonance of the wood is to blame. Generally the printer is in good shape. I maintain it once a year (lubrication, retightening screws, etc.). I experience this with all of my filaments (PLA & PETG), in the same fashion.
I already readjusted the belt tension, which reduced the problem slightly, but not enough to pin it down as the cause.
Any ideas? Could this be the fault of the input shaper?
Does somebody have a similar issue?
I am really at a loss of what to do here. Any help is much appreciated! <3