Donut Transformer is a piece of kinetic art. It has no practical purpose. One can push the handles and gradually transform the donut shape into a straight shape and back. The effect is achieved with a gear mechanism that is hidden inside the parts.
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 kit from Shapeways at this page (check with Oskar about screws), or
contact Oskar directly if you are interested in obtaining a fully colored and assembled sample of this kinetic art.