Fabrikator mini v2 extruder for flexible filaments

by SuperNES, published

Fabrikator mini v2 extruder for flexible filaments by SuperNES Jul 11, 2017

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This extruder allows you to print flexible filament such as TPU (Ninjaflex etc.) with your Fabrikator mini v2.

Based on robin7331's extruder:

Print Settings


Fabrikator mini v2






0.1–0.2 mm


20–50 %


• Print the base with support and raft.
• I used Das Filament PETG, works fine.
• I printed mine with 4 shells for sturdiness.


You will need 2 new allen screws M4x10 for mounting to the printer case, also 1 allen M3x6 for the bearing on the arm. The long screw holding the arm can be used from the original.

3 allen M4x8 screws for mounting the stepper motor to the base are optional, the original ones should fit also.

See robin7331's instruction video for final assembly:

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Hi there,
thank you for this great design, works very well!

However I was experiencing a couple of issues I wanted to share.

  1. After I installed this, I noticed increased underextrusion with certain filaments. It was due to the spring tension maybe a bit less than with the stock extruder. So I added some washers to increase the spring tension, which worked fine!

  2. I printed everything in PLA which was probably a bad idea. The Stepper gets so hot sometimes, that the entire base bent and the screws almost melted through the base. You recommended PETG which I obviously ignored ;) but since PETG has 90° vs 50° of PLA, printing in PETG will certainly be the way to go!