Bondtech IFS Extruder for Prusa Mini or Mini+


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IFS Extruder for Prusa Mini or Mini+
New Bondtech Internal Filament Sensor Extruder
for Prusa Mini.

This extruder is an evolution of Bondtech's previous high-resolution extruder upgrade for the Prusa Mini.

Filament Sensor
The new filament sensor for Prusa Mini/+ may be mounted inside the extruder housing.

The IFS Extruder for Prusa Mini may be used without the filament sensor. With a simple process it is easy to later update it to fit the Prusa Filament Sensor inside.

Upgrade Your Prusa Mini or Mini+
Upgrade your Prusa Mini/+ with a Bondtech Dual Drive extruder designed to seamlessly fit the original setup.

Filament Sensor Compatible
The Bondtech Internal Filament Sensor Extruder for Prusa Mini may embed the new Prusa filament sensor for Mini or Mini+ on its housing.
The extruder may be used with or without the filament sensor.

Hardened Drive Gears
Allows to use abrasive materials that would wear out the gears of your original feeder otherwise.

Adjustable tension
The thumbscrew tensioner allows the user to fine-tune the pressure exerted by the drive gears onto the filament. This gives you the power to adjust according to your preferences and to optimize for the type of material you are using.

To be able to do material changes in a snap, simply activate the Quick-Release lever to release the tension and pull the material to be changed out of the extruder, keep it activated and insert the new material.

More choice of materials
The hardened steel Dual Drive gears allow you to work with common and abrasive materials.
Included in this Kit

  • 1x Bondtech IFS extruder for Prusa Mini
  • 1x 10076-4 IFS Magnet Holder (PA12)
  • 1x 10076-5 IFS Lever (PA12)
  • 1x 15112 IFS Extruder Plug (HT-PLA)
  • 3x Black nylon zip-ties
  • 4x M3x35 black oxide steel screws
  • 1x M3x12 black oxide steel screw
  • 1x Brass motor gear
  • 1x Thumb Screw assembly

Not included in this Kit

  • Prusa Filament Sensor
  • Filament Sensor Magnets
  • Filament Sensor Steel Sphere

Community Sourced Design
The original Bondtech extruder for Prusa Mini design was proposed to us by Olof Ogland. This new IFS version was developed by Vecko Kojchevski on top of Olof’s work. It’s based on the thoroughly tested BMG (Bondtech Mini Geared) and adjusted to the Prusa Mini original design.

Product Info

  • Net weight : 114g
  • Gearing ratio : 3:1
  • E-steps value : 415
  • Extruder Housing: SLS Printed parts in PA12;
  • Hinge: injection molded.

Buy a Bondtech IFS Extruder for Prusa Mini or Mini+ from Spool3D for your 3D printer in Canada without the surprise cost of the exchange rate!

Manufacturer Part Number: EXT-KIT-82


5 out of 5 (based on 2 ratings)
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works good, fairly simple install

So upon upening up the package i was a bit horrified to see the main extruder gear is plastic, i figured as the original one was metal i would expect to see the same from an upgrade. I would give it 4 stars for this reason or less but the bondtech webstite talks about this being some high tech plastic and an improvement so i am not an engineer and i will leave my criticisms aside... It is slightly quieter but not drastically, the 'chirping' that seems to develop on the minis upon retraction seems to have been dealt with, which was my primary motivation for this upgrade. I have not tried any flexible filaments. Initially i had an issue with filament becoming stuck in the extruder when unloading but that seems to have been a case of tightening the tension knob too tightly, the last step of the video with the instructions for setting the tension are a bit unclear or maybe worded wrong but actually loosening the screw helped the filament unload properly. So far, so good, it's been a couple months or so.
Posted by maciej, January 15, 2024

Awesome upgrade so far !

Was having issues with under extrusion with the stock Prusa mini extruder. After installing this Bondtech extruder the issues is completely gone ! Great layers and awesome quality ! Great product. My only problem was that I was missing two screws in the kit (M35 and M12 to mount the Axis. Other than that it's a great upgrade so far.
Posted by Justin, August 25, 2021