Clearing Filament Jams on the Prusa i3 Mk3


These notes are based on my experiences with the Prusa i3 Mk3 printer. If you are using a different printer, please verify the hardware details are same. These pages may be a bit rough as I revise them and add new material. Please check back regularly for updates.


clearing jams

1.5mm polished brass rod

Fig. 21 1.5mm polished brass rod

Inserting the rod through the filament guide

Fig. 22 Rod inserted into extruder housing via top filament guide

Rod clearance through extruder and into hotend via PTFE tube

Fig. 23 Rod clearance past Bondtech extruder gears and into hotend via PTFE tube

Blockage cleared

Fig. 24 PTFE tube blockage cleared

Jams aren’t really a big deal once you get a handle on them, but you’d be miserable not having a tool or part to continue on the same night.

Contact and feedback

You can find me on the Prusa forums or Reddit where I lurk in many of the 3D printing-related subreddits.

Last updated on Mar 18, 2019