Prusa I3 MK2 MK3 filament holder extended guide
thingiverse
Extended filament guide designed for Prusa I3 filament spool holder (http://www.thingiverse.com/thing:2565556), created by Jasoncanning. Prevents tight bends that sometimes cause stiffer filaments to break when reaching top on tall prints. Limits positioning of the spool holder though. Modeled in FreeCAD, checked with MeshLab. Printed using Slic3r, Octoprint, and Original Prusa I3 MK2. Update: Some users faced issues with filament slipping out of guide with larger spools. Added an additional model where opening is moved to back side of loop, near mount, allowing it to flex slightly and act as hook to keep filament in place regardless of spool size.
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