Kossel Mini NEMA17 Extruder for 1.75mm Filament

Author: blomker, published on 2013-12-29

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Johann’s original Extruder uses stepper motor with Planetary Gearbox (5:1 ratio). It is an excellent minimalist design which works reliably.

This is a modified version which uses standard NEMA17 which is good enough to do the job.


Parts list :

1pc NEMA 17 Stepper Motor
1pc Drive Gear (11mm diameter)
1pc 625ZZ Bearing
1pc Push fit connector (M5 thread)
1pc M5 x 16mm cap screw
1pc M5 Nut
3pcs M3 x 10mm cap screw


Assemble the extruder based on the pictures.

License: Creative Commons – Attribution – Share Alike

Tags: Bowden, Bowden_extruder, Deltaprintr, Delta_printer, Extruder, Kossel, Kossel_extruder, Kossel_mini, Kossel_mini_extruder, Kossel_pro, Reprap, Rostock, Rostock_max