hearnmit's channel

Can your Helicopter Cube do this? My Helicopter Skewb can!

See how a Helicopter Skewb gets mixed up so that corners swap places with edges and all ...

This is an icosahedral analog of the Rubik's cube. It was designed in a CAD program, 3-d printed with SLS, then dyed black. Turning is very smooth ...

My new dino cube. I designed this puzzle in the mid 80s; it's been independently designed a few times. I made this from scratch: design in CAD, 3d ...

This is what paper rings do when you impose concentric mountain and valley folds onto them. Inspired by the work of Erik and Marty Demaine.

This is the iPhone and iPod Touch game called Subway Shuffle. The clip shows the basic game mechanics, and shows the solutions to a couple of the t...