akbiocca

The MK4 4.0 upgrade may create a lot of interest in the Bear frame as the parts removed from the MK3 in this 4.0 upgrade process will almost complete a...

The 3.9 upgrade reuses the frame, power supply and motors. The Z axis is apparently replaced in the 3.9 upgrade. The only addition in the 4.0 upgrade is the motors....

I see now their descriptions are inconsistent. But they do state that Z rods and bearings are part of the motors-only Mk4 upgrade. :) When I compare prints from my...

Prusa has said additional Z range is due to Nextruder. The thicker Z rods allow greater accelerations in X. Together with input shaping can improve speed. I could measure the...