Upgraded Misumi rods and bearings for Prusa Mk3 printers

Following one of our printers suffering a bearing failure and trashing the linear rod, we replaced them with the following:

PSFJ8-370 x2

PSFJ8-330 x2

PSFJ8-320 x2

LM8UU x10

With freight it ended up being about $200AUD for the lot.

These have close to 10K print hours on them with no issues, and they’re less noisy than the stock ones.

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