Jawa

Ideally you would never have to because you just have the two people come up with their part of the password and then initialise the LUKS partition together. Sorta like a key ceremony

You can also just split the password for a single LUKS into two parts and give one each to the two people :D

But does it splatter better than Vegemite?

Don't bring the marmite into this!

well it was less underextrusion and more the printhead just trying to go supersonic at those spots and the material just didn't flow fast enough :D

I also figured out, I can adjust the max volumetric speed of the PETG filament settings and that will limit the wall speeds autumatically

Edit: This turned out to interact weirdly with layer height changes, I ended up just reducing the max speeds.

Looks like the default speed settings in the slicer was just too fast :D

So yeah, that solved it! Set it to 50mm/s maximum and it just disappeared! Thanks for the suggestion :)

I just spent some more time observing and yeah, the printer tries to go super sonic for the walls there with up to 150mm/s :kekw:

I added some pics

It's kinda not at the start or end of the layer. The layer starts with the inner wall, which prints fine and then it does the outer wall which doesn't do fine.

Which corresponds to the wall here

What slicer are you using?

Bambu Studio 1.8.4.51

Thanks for the input!
So the thing I was trying to print was this: https://www.thingiverse.com/thing:6365845
Ideally you'd just print it in PLA but I only had one colour PLA so I thought, might as well gather some PETG printing experience :D
The part in question is red_panda_low_poly_V1_-_head_A_red.STL and I tried to print it on an odd angle to make sure that most of the outwards facing walls were on the top, because anything that needed support turned out so hideous.

Also it seems to appear on any side of the model, where you have a slight overhanging angle, in no particular axis :)

I'll print it in pla once my current print is done :D