Duet 3D Filament Monitor


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Current Stock: 19

Free shipping in Canada for orders over $140 before tax. (via Canada Post)

The Duet3D Rotating Magnet Filament Monitor very accurately senses filament movement. Connect it to a Duet 2 Wifi, Ethernet or Maestro and the controller will use the indicated movement to determine a wide range of extrusion issues including:

  • Filament run out
  • Extruder skipping steps
  • Nozzle starting to jam (causing skipped steps or grinding)
  • Filament beginning to grind in the extruder

It does this so accurately because it is effectively an extruder in reverse. The filament movement rotates a custom machined hobbed magnet assembly; the magent rotation is  sensed and constantly reported to the Duet. This method has proven extremely accurate across a wide range of filaments – frequently capable of pausing the print before a filament jam or other issue has already caused the print to fail.

Fully assembled in a MJF printed housing.


The filament monitor is easy to setup and calibrate to your filament: Setting up the rotating magnet filament monitor.

Buy a Duet3D rotating magnetic filament monitor from #Spool3D for your 3D printer in Canada without the surprise cost of the exchange rate!



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Duet3D - Filament Monitor

I am pleased with the size of this.. its smaller than I assumed and no more stuck not moving filament failures.. love it..
Posted by Andrew Hopper, April 21, 2020