Self Adjusting Filament Holder
thingiverse
This collapsible filament holder fits non-spooled filaments and works with Original Makerbot holders. Spring loaded to expand, it secures your filament in place; view photos for usage instructions. Print all parts without rafts or supports at low quality, requiring 3 shells and 10% infill for pins. Alternatively, print the Center Arm Bushing and fasten with 1-inch 6/32 hardware & washers. Secure spool rings with medium rubber bands for outward tension. A second mount with an empty spool can be used to feed the filament tube while the adjustable holder sits on top of your Makerbot, attached using the original holder. Pictures detail the setup.
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