These machines are fabricated out of graphite/epoxy composites, using hand lay-up molding techniques, with fillet brazed and cold-shaped chromium-molybdenum seamless steel tubing. Various rubber/vinyl/nylon/acrylic assemblies and alloy bicycle components are involved as well. All the sculptures are constructed deliberately using many similar parts and materials, and, much like classical music composition, they are exercises in variations on a theme. Each work is designed to traverse a different medium, and incorporate a unique approach for locomotion.