Self-Aligning Filament Guide for Prusa MK3s MKS3+ Update Sep/26
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Flexible rotating filament holder, aligns to filament direction to reduce friction and bends against feeding tension.
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Updated at source:
Model information
- Source
- Printables
- Category
- Prusa Parts & Upgrades
- License
- Creative Commons — Attribution
Improved Version after a few months of field tests.
Upper part bottom area enforced (old one bends too fast)
Smaller hole for bolt to ease up mounting
Hole in rail part for (small) screwdriver access
This bending holder is designed to improve filament guidance during 3D printing.
It features a flexible mast that can bend slightly and rotate freely, allowing it to automatically align with the current filament feeding direction. This helps reduce friction and unwanted tension on the filament path while the printer is operating.
The rotating and flexible design allows smoother filament movement, especially when the filament angle changes during printing. The holder is compact, simple, and intended for the Prusa MK3 Series
No need to unload filament before insert.
Bends a little to unburden extruder entry when spool is blocked
Filament guided parallel to extruder feed point (over the X moving range)
Rotates 90° to material transport direction for optimal bending
Can be printed w/o supports, the honeycomb structure saves much filament and print time.
M2.5 x 12mm Bolt and Nut needed (bolt can be longer). In order to secure the nut Loctite or nail polish is recommended.
Replace the clamp (lower) part for use on other printer models.
More stable version added, the original one bends too fast in daily usage
Updated from this initial version: