We create spirals and 2 paths through which the ball will be transported up, just once transported ball to a higher level. Then we create a circuit with conductors after which the ball will roll, the track must be wide enough that the ball does not fall out during turns and higher speeds. Everything is strengthened copper wire, connected tin. Wooden roll the wheel in which the ball will rotate. Thanks to the "knee" of the copper ball gains speed and carries more traffic on a wooden wheel. When done, the prototype marble run, you can add the effect of painting a 2-color-contrast black-white.