Single-Turn Helix
A minimalist, single-loop helical track designed for 0.5 inch (12.7 mm) steel bearings.
Marbles: Simple
Hidden Helix
A unique cylindrical marble track where the action happens entirely on the inside.
Conical Spiral
A simple yet highly eye-pleasing conical spiral designed for 0.5" (12.7 mm) steel bearings.
Arc Slider
A circular arc track (a segment of a circle) designed as a physics experiment demonstrating momentum and kinetic energy transfer.
The Loop-de-loop!
A simple circular slider designed for 0.5" (12.7 mm) steel bearings.
Test Track
An experimental linear marble track designed specifically for 12.7mm (1/2 inch) steel ball bearings.