If you are looking for a 3D printable wall clock with a USP, Lewis from DIY Machines has created one inspired by the Hollow Clock design.

The clock features a series of 3d-printed gears, all driven by a single stepper motor that [ekaggrat] found in surplus. The clock’s controller is based around an ATtiny2313 programmed with the ...

The Manifold Clock Kickstarter project embraces the mathematical concept of Riemann surfaces to create an artsy 3D timepiece that expresses time through shape and movement.