MK8 Extruder Rep2 Mod

by builtbybogus, published

MK8 Extruder Rep2 Mod by builtbybogus Feb 14, 2013
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A modded version of the MK8 extruder upgrade ready for the Makerbot Replicator 2.

It replaces the notorious delrin plunger with a ball bearing. Extruder reliability is increased and it actually fits perfectly in the Rep2.


What you get: Mounting & Lever part ready to fit the Rep2 filament stepper.

My Printing settings:

I printed with 2 Shells at 100% Infill at 0.2mm layers.

What you'll need:

  • a 623 bearing (3mmx10mmx4mm)
  • a 10mm M3 grub screw
  • a 20mm M3 flat head screw (shortened mine to 18mm)
  • a 10mm m3 flat head screw (shortened mine to 8mm)
  • 3 wire springs from 2 foldback clips (I used 20mm ALCO foldback clips)

  • a sharp knife, some rasps, manual skills and a bit of patience.

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