A recent research paper shows a way to create multicolor 3D prints using a single extruder if you are too lazy to babysit the machine and switch filament. The concept: print your own “programmable” ...

If you can dream it, you can most likely print it, thanks to the help of sturdy and reliable 3D printer filaments. By Amanda Reed Published Jul 5, 2023 4:00 PM EDT Add Popular Science (opens in a new ...