Upgrade your Caribou or Prusa
Upgrade your Prusa with a Bondtech Mini Geared extruder featuring higher gear ratio – 3:1 – that allows for extra push force and higher resolution.
Print Faster Or With Higher Quality
This lightweight extruder will allow your 3D printer to print faster or to achieve even better surface quality.
Reduce 3D Printing Issues
Decrease the risk of heat creep to avoid clogs and improve filament feeding by avoiding slipping and deformation that cause under and over extrusion issues.
Upgrade kit With Optimized Design to fit Mosquito hotends
This is a Bondtech upgrade for the popular Prusa I3 MK3S and MK2.5S that will allow the use of the world acclaimed Mosquito hotends.
Bondtech Extruder For Prusa i3 MK2.5S & MK3S
This kit contains only the necessary parts to convert your current extruder to our own popular design based upon our BMG (Bondtech Mini Geared) extruder with 3:1 gearing ratio for better precision and resolution together with optimized geometry for the heatsink cooling and professional SLS 3D printed housing.
Working Temperature Limits
Bear in mind that if you use this upgrade kit inside a closed chamber, it will have the following set of working temperature limits:
NOTICE: This Upgrade Kit does not include the Bondtech drive gears (already supplied by Prusa).
To use this Upgrade Kit, you will also need to buy the following:
Product Main Features
This extruder upgrade presents the following main features:
MK3S / MK3S Mosquito, What’s the difference?
This Upgrade Kit is mostly similar to the previous MK3S, with the main difference of having been designed to fit the Mosquito and Mosquito Magnum hotends.
Other differences come from the design changes that include:
Updating the Firmware
To use this upgrade in the MK2.5S / MK3S, the E-steps and Z_Max needs to be updated. Check out the latest version of our firmware.
To use the MMU2s together with the Bondtech an extra Add-On is required. This will allow sensor to trigger once the filament is reaching the drive gears.
You can download the STL file bundles from our MMU2S Add-On Files from Bondtech: https://www.bondtech.se/en/product/prusa-i3-mk3s-mosquito-extruder-upgrade/#tab-mmu2s-add-on-files
All credits to Leon Van Roosmalen for his amazing design. Find more information about his work and designs here: https://www.thingiverse.com/Leonrsmln31/designs
This is a co-development work with awesome guys in the Prusa Community like Chris Warkocki, Grégorie Saunier (Bear Upgrades), Olof Ogland, Erik Bjorgan, Josh Jones, Kyle Wiehe, Marc Evertz, Matt Harrison, Ocie Ward, Sando Bendig, Vecko Kojchevski (Vecko Extruder), Steven Mölby, and Yuri Delia that have provided excellent feedback and suggestions of how to develop the “perfect” extruder setup for the Prusa series printer. A lot of work has been put in this project and we tried to listen to all the inputs in order to find a solution that can be the best fit to the Prusa I3 MK3S.
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