This is a model of a bicycle wheel with tire, rim, spokes, hub, and gear
cassette. It is actually fairly simple geometry, with only 34 primitives.
However the structure is complex (343 total objects). Construction made
heavy use of the build_pattern tool to replicate things like spokes, gear
teeth, and holes. The texture on the tire uses a procedural noise bump
shader.
BRL-CAD v5 binary database