Skateboard boards without wheels that have never been skated on, that have been painted on at an art school with cogs, machine cogs that kind of have the feel of flowers because the shape is similar and because the painter loves cogs so much and because they sometimes have a green background.

Three such boards casually laid criss cross with each other make a kind of triptych at the Academy of Art Gallery on New Montgomery between Market and Misson.

The skateboards have no wheels, and the cogs painted on the skateboards wouldn't be good wheels; they would bump. But the beauty of the cog shapes may partly come from the joy the painter had while skateboard wheels went round and round under him.