Well, the difference today would make you think the prints came off different machines. Also noticing though, the blue ultimaker PLA doesn't seems to print as nicely as the orange, even when not under extruding, the surface finish isn't as smooth at the same speed and layer height.
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gr5 2,069
Interesting idea. I have no idea. Maybe it could also cause the extruder to slip and therefore grind the filament?
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