This is a part of a parent collection of many different marble tracks compatible with Marbleworks Grand Prix marble set. See remix source for larger collection of marble tracks.

A spiral loop to replace your boring, everyday linear marble run. Marble keeps momentum going through the loop (mathematically backed). Specifically the equation followed is `r = 1 - 2 cos θ` and the horizontal axis was chosen so it was perfectly balanced when it was flat, although the hood over the path to stop the marbles causes it to be a little off.