Sundae Spool Holder (twin bearing)

thingiverse

Sundae Spool Holder (v2) This spool holder is designed to work seamlessly around a 20x20 aluminum profile beam, commonly found on various 3D printers, ensuring extremely smooth rotation of the filament spool via two 608 bearings per side. It uses a set of two parts and four bearings for each side, along with another printed part that keeps the spool in place while allowing easy access to it. ## History - **v1** (Jan 2019): The initial version used two end caps but wasn't compact 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 choice - Simple Keeper (included in this project) - Fries Edition (https://www.thingiverse.com/thing:3427501) - Do You Want Fries with That? ## Non-printable parts: - Four 608 bearings (ABEC 7 is fine) ## Spool compatibility: Inner diameter >= 50 mm ## Build manual 1. Print the required five parts. 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). 6. Done. *** Design motivation: I began 3D printing by just hanging a spool over a 20x20 beam, continued to improve rotation with a slide-on rounded printed part, then used printed parts with one bearing on each side of the spool roll frame. However, even this solution was unsatisfactory. The spool would be pulled up until gravity took over and it fell. It became clear that only a twin bearing solution per side would offer smooth operation. The TUSH matches the intended design goal, but it's standalone. 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 part one end cap. I remixed it roughly from the TUSH Spool Holder. Actually only the notches where the bearings are pressed onto are what's left of the TUSH design.