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 sound… ...

The flaps themselves are 3D-printed, with filament changes used to color the characters against the background. If you’ve ever dreamed of building a flap-display clock or ticker, you needn’t ...