Prusa i3 MK3S EXT STP Cooler R2
thingiverse
I used spare parts from Prusa to assemble the M3 x 15: 4 pcs, and also for the Nut M3: 4 pcs. One Prusa i3 MK3 Noctua Hotend Cooling Fan 5V (40x40x10) and one Alu. heatsink 20x20x10 are needed to complete the assembly. Two Jump wire (Male to Female) are required for connection. Connecting the fan into controller board (Einsy RAMBo) requires some skill. PrusaSlicer settings need to be adjusted: Extruder Stepper Motor Cooling Cover needs a support blocker in 0.2 mm Quality mode. Fan cover needs supports everywhere and a support blocker in 0.2 mm Quality mode. The 3mf files are designed for PETG only, but can be modified for PLA by adjusting the settings in Slicer. Revised on July 17, 2020: Fan cover updated to Version R3.
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