1x Anything Filament Hanging Bracket with Bowden Tube to feed any printer at any input angle

myminifactory

Removable filament roller slides onto a 1x board easily. This was inspired by the 3D Printing Nerd Filament contest and built to solve a problem of limited desktop space required for a Prusa with MMU (details at the end if interested). Filament should unwind toward the back of the wall for proper support from bracket. Roller rolls freely in holder as long as you leave a little bit of space and don't have end caps up against brackets. Roller slides left and right slightly, then it will roll freely as well. Roller is a separate piece that can be adjusted to any length desired by scaling z height during printing. It is sized to fit the widest filament roll without adjustment. Roller is 3/4 inch wide so any other 3/4 inch round material can also be used. Two endcaps are glued onto each roller. The endcaps have holes for loose filament if you're not using the bowden tubing solution. There is also a bowden tube guide/holder available, which is optional but recommended to capture the filament. A 4.2mm hole worked perfectly for me, and I included a 4.3mm version as well. The intended setup involves gluing the bowden tube holder to the front, shown in the pictures. Feed about 4-5 inches of tubing up from the bottom to capture filament coming off the spool. Bowden tubing exiting the bottom can simply be a few inches long to prevent the filament from loosening on the spool and tangling or it can reach down to the printer. If you run the bowden tube down to the printer with some slack, you can feed the printer at any angle needed. In my case, I ran 3-4 feet of tubing out the bottom. I used enough tubing to make a loose J formation into the inputs of a Prusa MMU. The extra bowden tubing allows the MMU to feed from the downward direction off the spool into its 30-degree upward feeds without breaking the filament. You don't need expensive bowden tubing for this since you're just using it as a pipe to control the filament - cheap 4" OD 2" ID tubing is fine.