I needed a storage solution for my filaments that took no space in my small studio, so I designed this filament holders that you can screw to the bottom of your top shelf or in a low ceiling.
You can make it as long as you want! Just consider adding “Middle Hangers” (stl) every 50cm (20inches) or so.
Uses 19mm (0.75inch) diameter rods to hold the filaments (you can use metal or wood, but I believe metal flexes less)