Spool Holder (connectable)

I wanted to store several of my filament spools in a space-saving way on a shelf. While there are already many spool holder options available, I decided to create my own design due to a few specific requirements:   No Shifting – No Hitting the Wall The holder is designed so that the spool doesn’t touch or rub against the wall. Low-Profile Design for low Shelves Since my shelf has limited height, the holder is built to be especially compact. The front is intentionally flatter, allowing spools to be easily rolled or lifted out towards the front – perfect for tight spaces.