Extruder modification that allows the MK3S to use the Volcano Hotend.
The print fan has been lowered 8.5mm to accomodate for the extra length of the volcano hotend.
Apart from the lowering of the print fan the rest of the extruder design remains the same as the original release from Prusa Research.
Assemble as normal.
Prusa PETG PETG + ABS
Can be printed out of PETG or ABS.
The official Prusa advice is to print the fan shroud from ABS only to allow the new fan design to withstand high temperatures. The fan shroud on the MK3S is far closer to the hotend than in previous designs.
All other parts can be printed from PETG.
If having trouble printing the fan shroud tower in ABS modify your slicer settings to turn on the fan once it starts printing the tower. As the layers are small at that point there is not always enough cooling time to harden before applying the next layer.