MPSM V2 Extruder (Outdated See Decription)

thingiverse

###WK8 Extruder ####MPSM V2 Extruder Replacement. This is outdated, please use the improved [WK9 Extruder](https://www.thingiverse.com/thing:2756509) This upgraded extruder is designed to work with the V2 stock hardware, specifically for mid 2017 models and later. The exception is the Bowden tube fitting, which requires a PC4-M6 Pneumatic Straight Fitting and an M6 nut. These parts can be easily obtained online or found at local hardware stores. Stock Parts: - Screws - Arm Bushing - Spring - Bearing (4x11x4) - Feeder Gear Needed Parts: - PC4-M6 Pneumatic Straight Fitting, for 4mm OD tubing. - M6x1.0 Nut Notes: - I printed this with PLA (Hatchbox - Pantone Yellow C), 2.1mm wall thickness (6 shells), 20% infill, no supports, no raft. If you just want to print a replacement Arm, you won't need any extra parts. Just print the Arm and Cap. The Extruder Cap comes in 4 different tolerances, I recommend using whichever fits in the tightest, as it helps properly support the bearing. I used the .05mm tolerance version, and it snapped securely in place. You'll want to flip this part over in your slicer (top down). The Extruder base has a 4mm hole leading up to the slot that takes the M6 nut. This is meant so you can put a small length of PTFE tubing (<20mm), cut with a V shaped point (when looking from above), so that it nestles in between the drive gear and bearing (without touching). This helps guide the filament through the extruder and will allow you to print flexible filaments like TPU. Acknowledgements: Shout out to [robin7331](https://www.thingiverse.com/robin7331/about) and his [MPSM Extruder Baseplate V1](https://www.thingiverse.com/thing:2029972) for the idea to make a slot for a nut to work with a PC4-M6 fitting.