Readers offer their best tips for building your own 3D projector, coordinating group photos for events, and studying more effectively. Every day we receive boatloads of great reader tips in our inbox, ...

Technically, this simple DIY project doesn’t produce a hologram, but the results look very similar. The idea is to create a pyramid of transparent, reflective material with the point facing down onto ...

Projectors are getting a lot less expensive these days, what with China pumping out Pico projectors by the boat load and all. But did you know it’s not that hard to convert an old slide projector to ...

Anyone with a CD jewel case and office supplies can turn their smartphone into a 3D hologram projector thanks to this instructional video.

With this tutorial on how to turn your smartphone into a hologram projector, we move one step closer to having a tiny person hologram Patsy Cline. To make your own 3D butterfly, you’ll need to collect ...