There’s a reason why PETG/PLA are used as interface materials for supports in multi-material printers. There’s no molecular bond and so the parts will snap off very easily.

I’ve got a 0.8, I just haven’t tried it yet. I feel like the prints would be too imprecise for most applications though, no?

Use a 0.6mm nozzle, it’ll change your life.

If you happen to have a 3D printer, Gridfinity would be my go-to solution. Otherwise, those Kinetic Labs containers seem like your best bet.

Would it be possible to embed harder plastic bumpers/reinforcements from PETG or PLA inside the walls? I feel like that could make something like this even more useful