Start with a tall, skinny tetrahedron frame. Add the chain lift, the entrance track into the lift and the exit track coming out at the top. Install three track splitters and you’re ready to start filling the frame. With those three splitters, this RBS has four different tracks to watch.

The loop d’ loop ends by launching the ball through the air and into a basket. There’s also an almost-loop that sends the ball curving upward and onto a higher section of track.

The ball-exchanging teeter-totter is one of the more unusual elements. A ball rolls over the teeter-totter and gets captured underneath it. The next ball tips the teeter-totter, freeing the captured ball — but in doing so, gets trapped itself. It waits there until the next ball comes along and the whole process repeats. After leaving the teeter-totter, the released ball rolls through a couple sections of horizontal zig-zag and into more curves and corners.

Another track ends in a skinny spiral that captures the ball at the bottom and sends it spinning around and around until it gets tired and finally drops through.

All four tracks eventually converge in the steel collector plate at the bottom, where the balls are sent back to the chain lift for another trip down the tracks.

100% stainless steel, TIG welded.