Sundae Spool Holder (twin bearing)

Description

## Sundae Spool Holder (v2) This is a spool holder designed to work around a 20x20 aluminum profile beam commonly found on all kinds of 3D printers and ensuring extremely smooth rotation of the filament spool via 2 x 608 bearings per side. It uses a set of two parts and two bearings for each side and a another printed part to keep the spool in place, that still allows easy access to it. ## History - **v1** (Jan 2019): the initial version used two end caps (now part B) but wasn't small enough for all spool geometries - **v2** (Feb 2019): Completely reworked construction designed to be as compact as possible. ## Printable parts (5 in total): - 3 x sundae spool holder v2 - part A - 1 x sundae spool holder v2 - part B (if you don't want/need the "part B" end cap, you can print the "part A" four times instead) - 1 x spool keeper of your choosing - Simple Keeper (included in this project) - Fries Edition (https://www.thingiverse.com/thing:3427501) - *Do you want fries with that?* ## Non-printable parts: - 4 x 608 bearings (ABEC 7 is fine) ## Spool compatibility: Inner diameter >= 50 mm ## Build manual 1. Print the parts (5 required) 2. Press the bearings onto part A/B 3. Repeat with the counter part A/B 4. Slide the two sets onto the beam 5. Place the spool keeper over the connecting bit for extruded profiles (see photos) 5. Done *** Design motivation: I started out 3D printing by just hanging a spool over a 20x20 beam, continued to improve rotation with a slide-on rounded printed part, to using printed parts with 1 x bearing on each side of the spool roll frame. But even the last solution was not satisfactory. The spool would be pulled up until a certain point when gravity pulled it over. It was clear that only a twin bearing solution per side would offer smooth operation. The TUSH matches the intended design goal, but it's stand alone and so I looked for a solution that works around an extruded profile beam. Nothing could be found, so I started my first project. A few iterations and many prototype prints later here we are. The name is derived from the look of the part1 end cap. I remixed it very roughly from the TUSH Spool Holder. Actually only the notches where the bearings are pressed onto are what is left of the TUSH design.

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