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Extruder Portia
Our Open Source single-scew extruder for professional small and medium-sized businesses
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“Portia” makes it easy to manufacture your own 3D Printer Filaments

Produce your own filaments, masterbatches and compounds! Together with a right die and equipment you can even manufacture rods and other plastic materials in various shapes!


Drawings, Codes, Parts-List will be published as Open-Source and can be found here in a future update of this page.


Currently we are working on the documention files. We will release them here on this page and we will announce the release on twitter and on our blog & newsletter.

Build it!

With our upcoming documentation you will be able to build your own professional extruder.

Buy it!

Sourcing the needed parts can be difficult and expensive. We will offer you in an upcoming update in our shop the basic components of our extruder, such as extruder screw, extruder barrel, hopper and gear box.

Extruder-Screw Design

We use a modified 3-zones extruder-screw with a special mixing tip. The universal design fulfills the most requirements for manufacturing a wide range of plastic products.

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Files & Documents

Download here all files and documents to build your own professional extruder! The file which can be downloaded by clicking the button below will be updated from time to time. If a new version is going to be released then we will announce this on our blog and on twitter.

Coming Soon...

View our 3D-Model in your browser

The 3D Model of our current prototype can be viewed in your browser or use VR Gear like Oculus or Samsung Gear VR.

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Upcoming Features

Currently we are implementing a PLC System to automotate repetitive tasks and we are developing a software for controlling and monitoring your extruder online on your PC or mobile phone.

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  • 3-Phase-AC
  • 7.5 Kw Motor-Power
  • 1500 RPM
Main Electronics
  • Bosch EFC3610 VFD
  • Eaton Switches and Circuit Breakers
  • Phoenix Contact Terminals
  • Rittal electric cabinets & accessories
  • A-Senco 40A SSRs
Barrel & Screw
  • L/D 40/25
  • Three-Zones-Screw with mixing tip
  • Compression Ratio 2.8:1
  • Suitable for PLA & ABS
  • 5 Heating Zones (4x 1500W, 1x 250W)
  • Ceramic Heatbands
  • Max. Temperature 300°C
  • Air Cooling
Gear Box
  • Gear Ratio 15:1
  • Synthetic Oil: Shell Omala S4 GX 460
  • Length 2m, Width, 0.5m, Height 2m
  • Weight: 650kg
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