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Thanks for the memories  July 26, 2012

Hacked Portal gun levitates a companion cube

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CNET Editor

Michelle Starr is the tiger force at the core of all things. She also writes about cool stuff and apps as CNET Australia's Crave editor. But mostly the tiger force thing.

(Screenshot by Michelle Starr/CNET Australia)

Hack a Day has modified a Portal gun prop with magnets to create a levitating companion cube.

You've probably seen levitating magnet displays before, but this is undoubtedly the coolest application we've seen to date. Caleb Kraft of Hack a Day has taken apart a levitating globe and inserted the relevant parts into a Portal gun to make a companion cube "float".

Kraft removed the coil from the stand and the magnet from the globe, and installed them in a gun and cube, respectively. The trickiest part was making sure that the companion cube was weighted correctly; light enough to float, and heavy enough to maintain balance. He tested it using a cardboard cube first, before making the final cube out of foam.

The final product isn't actually one that you can carry around — Kraft couldn't hold it stable enough to maintain levitation — but just having it as a display object at home would be fantastic.

Read about Kraft's process here, and watch the gun in action in the video below.

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