Fully 3D-Printed Filament Rack (Remix of BTR3D Design)

This remix is based on the elegant Filament Rack originally designed by BTR3D.
 Big thanks to the original author for the simple and practical idea.

 Modifications I made:

Replaced the 15 mm aluminum tube with a 3D-printed cylinder (up to 24 cm printable on my Creality V3-KE).

Added middle connector (top & bottom) parts with through-holes so the printed rods can be stacked.

Now the rack can be built entirely with 3D-printed parts only — no extra materials needed.

Each column can hold up to 3 × 1 kg spools neatly.

 Just print the parts, glue them together, and you’re done.
All thanks to BTR3D for the original inspiration.