Currently, I am trying to cut 0.2mm bottles with the standard bottle cutter. Unfortunately, it keeps on on jamming. Upon closer inspection, it seems that the bearing seats have been deformed. I think the bearings were loose so instead of the outer ring spinning they were both moving. I assume over time the seats were grinded down. After reprinting the part, the cutter works again. I am ashamed to admit it took 2 days for me to resolve this.

[Figure 1: Grounded down bearing seat]