Learn how to build an easy hidden door in Minecraft using basic redstone or simple blocks. This secret entrance is perfect ...

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, ...

As large and ubiquitous as Amazon is today, it's difficult to remember that it started in a garage. Jeff Bezos and his first few employees packed books and took them to the post office themselves in ...