Extrusion v3

Status : discontinued (wait for v4)

Efficiency : 4 out of 5 stars

Design : 3 out of 5 stars

Safety : 3 out of 5 stars

Price / Value – Bazar : 3 out of 5 stars

Power consumption : 2-4 Kw (1Kw for heatbands, 1-3 Kw for the motor)

Mass : 30 – 50 Kg

Capacity : unknown

Build – time for beginners : 3 days

Build – time for experts : 1-2 days

Required machines : drill press, stick welder, power tools

Recommended machines : lathe , CNC , MIG welder, bench grinder, angle grinder

Material bill : 400 – 1000 Euro

Bazar price : ~1000 – 2000 Euro


Europe – Spain

Cheap heatbands (may last up to 3 weeks to receive)

Expensive heatbands 

SSR, PID, Thermocouple (come often as bundle)

PID/temperature controller : We recommend the Inkbird ITC 100VH since it is keeping the target temperature around +/- 1 degree Celsius and does no overshooting. The REXC – 100 has also auto-tuning but it still overshoots the target by 10 – 20 degree.

VFD (Variable Frequency Drive, enables to run 3 phase motors on single phase)


Please check out the forum on the subject


  • Desired Speed : 30 – 120 RPM, depends on screw and plastic type.
  • In general we recommend a 3 phase motor with at least 800 watt, as well a 1:30 – 1:50 reducer. Here is a one which works well for with an industrial screw as well.
  • for the ‘wood auger’ variant you can use also a DC motor as well single phase motor with at least 500 Watt for occasional use. For production you have a better lifetime with 3 phase.


  • the wood auger may break with too much motor power

Variants / Community versions & hacks


  • needs industrial screw to create quality and also to make beams 
  • doesn’t create filament as advertised, even with industrial screw it is a difficult process and needs lots of extra equipment. please check the dossier on the subject
  • improper welding of the structure may brake the screw mount

Components / Sources

Buyer guide – Bazaar

  • make sure you have a speed regulator
  • if you see high prices like 1500 Euro and more, make sure it has good heat bands (most use still 5-7 Euro heat-bands) and an ‘industrial screw’ as well heat insulation around the barrel


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