Roller Ring | Stable multi-mount parametric filament spool holder

Parametric filament spool holder designed for stability with multiple mounting options. 

The design was motivated by the basic simplicity and efficiency of the roller configuration while trying to create a stable mechanism for any spool size and mounting position.

Key Features

• Fully parametric allowing complete control of all options from minimal lightweight to reinforced designs supporting virtually any spool size
• Ring structure provides better stability with minimal filament and if using ABS, suffers less print warping compared to straight edges
• Optional retainers prevent spool dislodging when weight reduced and allow mounting at any angle
• Inner flanges on bearing holders negate the need for washers on the base
• All parts can be printed apart from bearings
• Spools can be changed quickly without tools

Instructions

Alter the required values using the Customizer in OpenSCAD. The minimal configuration without retainers requires 4 bolts and nuts and 4 bearings. All parts are printable except the bearings.
If using the optional retainers, threaded rod can also be added between the retainers with 2 bearings to secure the spool at any angle. I have included printable substitutes for metal 8mm nuts, bolts and threaded rod that print well. See NUT JOB | Nut, Bolt, Washer and Threaded Rod Factory  for more info. https://www.prusaprinters.org/prints/94761-nut-job-nut-bolt-washer-and-threaded-rod-factory

I recommend using at least 40% fill for the base and 100% fill for the nuts, bolts and threaded rod.