Mr. Roboto is the coolest spool holder around! This design was extremely complex to construct, yet it is effectively simple and efficient in doing what its made to do! I designed every aspect of the holder, using combinations of 3D shapes to form the creation, then I added touches to make the holder work to the best of its ability while still maintaining its cool look. I have designed the holder to hold a variety of spool shapes and sizes. It can hold spools with: Mr. Roboto also has a feed where the filament goes through keeping it untangled and on the right path! (It dispenses from the middle of the triangle) Build your own Mr. Roboto Spool Holder now! :DTo build the spool holder simply thread the filament through the thread hole (look at red arrow: thread through back of head), put the cylinder spool holder through the filament spool hole (add the stability rings on either end depending on the width of the filament spool: blue arrow). Then place the cylinder spool holder in the slot of Mr. Robotos head (purple arrow) Simple as ! :)