I was looking for the perfect filament rack for myself when I came across this excellent design by Jimmit. Very simple but strong and easy to assemble, but I didn't want to use a broom handle so I did a simple remix to fit 1000 x 12 x 1 mm aluminium pipes ( https://www.amazon.co.uk/dp/B076PTWV34 )
So I just made lots of them and glued them together. I hope you like it but I can't take credit for the design.
Filament: PLA
Layer height: .24
Walls: 4
Supports: None
Infill: 25% Cubic
The author remixed this model.