Obligatory link to laser related hackaday story



This looks like a lot of pointless fun!

Amusing, even if mostly useless

How about a rolling-ball binary digital mechanical computer?

Sadly out-of-production, but seems pretty doable using multiple layers of plywood…


I love that!
Maybe if enough of us bug them they would open source the plans.


Mathias Wandel has so many great inspirations on his site. Here’s his marble contraption page. I have learned so much about woodworking technique from him.


You could make a giant one and use the laser to cut all of the levers and dividers.