A motorized "Brio type" train climbs this seesaw--and its weight flips it down the other side. The track (actually it's a channel) is 3D printed and can be customized as to angle, radius, length and color.
Bio:My book, A BEGINNERS GUIDE TO 3D PRINTING: 14 SIMPLE TOY DESIGNS TO GET YOU STARTED is now available. If you want to design your own stuff, but thought it was too hard to learn, it isn't. Take a look....read more »