Our Marble Tower is one of the best selling plans in the country. Marbles automatically release every 2 seconds to cascade down and around a network of troughs, ramps and over a xylophone. Marbles ring bells, spin paddles and trip levers. Children are captivated by the action of the fun, Rube Goldberg-like mechanism. Most patterns are full size. 41″ tall, 18″ x 18″ base. Our 11″ x 17″ plans take little workbench space. The copyrights allow making a photocopy of the full size patterns. Trim out the patterns, apply spray adhesive on the backs and place on stock prepared to the thickness noted on the pattern. You get accurate parts and no tracing. We mail fast within one business day. For intermediate woodworkers.