Interested in experimenting with your own multi-color filament? [Turbo_SunShine] says to just print your own, and experiment away! Now, if you’re thinking that 3D printing some filament sounds ...

[Cliff] of might have the answer for you, in the form of 3D printed bearings with filament rollers. With the exception of the raw filament rollers, the inner and outer race, roller cage and cap ...