Marble Castle is a 3D-printed marble track. The ball runs from the top center all the way down, over the castle wall, into the back gate and out through the front gate. This miniature version was designed for bicycle ball-bearing balls.
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 puzzle kit from Shapeways at this page (check with Oskar about screws and stickers), or
contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.