The astonishing variety of ways to tell the time which have appeared on these pages over the years provides a showcase of the talents and ingenuity of our community. Many clocks use designs we are ...

Marble machines are a fun and challenging reason to do engineering for the sake of engineering. [Engineezy] adds some color to the theme, building a machine to create 16×16 marble images automatically ...

Back in 2016, we featured a stunning wooden machine that employed falling steel marbles to play a merry tune. As plans are drawn up for a new version, its builder has looked back to the designs of ...

Remember Martin Molin's Marble Machine X, the mechanical, musical Rube Goldberg machine that uses some 3,000 components and a hand-turned crank to drop marbles in sequences onto acoustic and electric ...