The Radial Engine, 20% off now featured on Fab.Fab.comMail it,...

The Radial Engine, 20% off now featured on Fab.
Fab.com
Mail it, open it, wind it and watch it move! The Radial Engine is a kinetic greeting card that merges art and engineering with mechanical precision. The first in Bradley Litwin’s limited edition series of MechaniCards, this signed sculpture includes a mailable box and a wooden handle that lets you manually operate its gears. Engineering nerds will recognize the design as a cross-section demonstration of the crank and piston arrangement. The rest of us will simply marvel at its radial mechanisms!