This is a spool rack made of a broomstick and 3D printed legs. you can find more details here: http://harariprojects.com/2015/07/18/3d-printed-filament-rack/ and more projects of mine here: http://harariprojects.com/to create this you'll need a broomstick cut to length, two or more printed legs (more than two can be used for extra support in the case of a long rack with a lot of spools), two screws and two nuts. the model fits a broomstick diameter of ~21.5mm. I provided the original file so that you can modify it as needed (created in sketchup) you can find more information about this here: http://harariprojects.com/2015/07/18/3d-printed-filament-rack/