I had an 80% 3d printed rod system to hold all my filament fail. With that failure I really wanted a secure way to store my filament. In my experience the closet track systems have been a tried-and-true solution for most of our storage needs. Why not for filament too? So, I decided to give it a shot. Quickly realized that I will have to make the brackets that I was envisioning. So fired up the CAD and went through multiple prototypes to arrive to the model before you today! Hope it is helpful!