Balancing Gears is a balancing act with gears. Because of the gearing ratios, the hollow red gear will always remain on top of the other gears. This is a proof of concept, to see whether the red gear does indeed stay at top, and to see how stable the set up is. Like with many of Oskar's gearing mechanisms, also this one does not have an obvious application.
Watch the YouTube video.
Read at the Shapeways Forum.
Read more at the Non-Twisty Puzzles Forum.
Please order a 3D-printed do-it-yourself gear kit from Shapeways at this page (check with Oskar about the screw), or contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this contraption.