Printrbot Simple Metal filament tube feed system

thingiverse

These are some parts I designed to hold a quarter inch clear tubing which I used to guide my filament. (Check out the photos.) To get started with printing and assembly instructions, see the Instructions tab below: Instructions 1. Print one "feeder" and two "filament tube holders." 2. Remove the extruder tension screw and spring. 3. Slide the feeder over the extruder arm until you can see the extrusion gears through the hole in the top. Minor sanding or cutting might be needed to get a perfect fit, but note that the hole doesn't have to be centered as long as there's enough room to push filament through. 4. Slide the filament tube holders over the tops of the Z bars. 5. String your quarter inch tubing through the holes in the tube holders and into the feeder. 6. Push the filament from the end of the tube until it emerges at the extruder. 7. You're ready to print!