This puzzle is deceptively difficult. The goal is to move the steel balls from their start position to the center position by tilting and the disk and rolling the balls.
The maze is eight inches in diameter. I used 1/4" Baltic birch plywood but the thickness is not that important. Use what you have available.
One of the features that make this puzzle more difficult is that the openings in each ring get smaller. All three balls will not fit through the center opening at the same time.
The balls used in this puzzle are 1/2" in diameter. You can buy them at the link above if you don't have an alternative. Small marbles will also work.
One feature that I added to this prototype is the holes to hold the balls in the start position. If I were to make another one I would eliminate the holes and use a marker to indicate the start position. They interfere with the rolling of the marbles too much.
This is a very simple project to cut. I completed the entire project in under an hour. Just try to be accurate when you cut the circles. If you use 1/4" thick wood you can easily stack cut four at a time if you wanted to give a few away as gifts.
