Modular filament spool rack

I had too many filament spools lying everywhere, so I decided to create a shelf to organize them a bit.It is completely modular, you can stack as many of them on top of each other as you want, but you should use some stronger filament material if you want to make more levels.I used these broom handles with a diameter of 28mm and 180cm length to hold filaments. With two levels, it can hold up to 48 filament spools, when using the same broom handles as I did. I also used 4x40mm self-tapping screws