Hack A Day: Bi-Color Filament Kicks 3D Printed Optical Illusions Up A Notch

Hack A Day: Bi-Color Filament Kicks 3D Printed Optical Illusions Up A Notch. “A new video from [Make Anything] shows off a nice combo that has a real visual impact: ambiguous shapes that look different depending on what angle they are viewed at, combined with an unusual filament that enhances the effect greatly.”