Color gradient filament is fun stuff to play with. It lets you make 3D prints that slowly fade from one color to another along the Z-axis. [David Gozzard] wanted to do some printing with this effect, ...

In Adobe Illustrator, if you want to make one object or group gradually fade to reveal the object underneath, you can use a fade mask. Through the use of the "Transparent" and "Gradient" panels, you ...