Filament Guide with ABS and PLA Labels

I use a "Lazy Susan" for my spools since it makes filament very simple to load and keep perfect tension on the filament line. I made these guides to make it easy to remember if the filament is PLA or ABS. Two M3 screw holes are also used to attach the guides to a wood board that has several "Lazy Susans" on it. I normally stack 2 or three spools on each "lazy Susan and use a little hot glue to attach them the the "Lazy Susan" and to the other spools. It works extremely well espencailly if yo