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I tried to print all the part in PLA but the Prusa_Enclosure_Bottom_Corners failed each time (the filling failed and some "clac" noize can be heard). I've printer (after this failure) all the other pieces (and lot of other things) without any problem and i've never got that kind of problem or "clac" noize.
I know it looks like a Filament grinding problem but I try with 3 different filament (all PLA) and get the same problem, and I've never the problem for other print.

Could it be that the bowl shape is disturbing the printing ? Is it common with PLA ?

I will try with a slower speed this night.

I've got a Prusa MK3, tried to print with 0.2 and 0.15 speed, PLA 1.75mm