Check out this interview with Tim Eads in Open Letters Monthly. Here’s an excerpt:

OLM: Could you tell us a little about Twenty? That’s not the butter-churn piece, is it?

Tim: Twenty is a piece I made in 2009 for my degree show. Since then I installed it at the University of Delaware Gallery Crane Arts building in Philadelphia. It was great to see the installation take on a new form in a different location. A video of the installation can be seen here. Twenty is an interactive installation where the viewer pumps one of two bike pumps in the room. After twenty pumps, the air travels through 400 feet of air hose and blows a small pinwheel. The piece brings up another common theme in my work which is the idea of inefficient mechanisms. Twenty falls into this category because it takes twenty pumps to get enough air to blow the pinwheel — quite ridiculous if you ask me.

The pedal-operated butter churn that generates electricity to run a toaster is titled 3,178 minus 366. 3,178 is the approximate number of calories in a pound of butter, 366 is the approximate number of calories burned to make the butter on the bike (about 30 minutes) A video of the piece can be seen here. I made the piece using funds that I raised on During the show I schedule butter making events where viewers can pedal to make butter. Monday was one such event — we made over 10 pounds of butter in 2 hours. The piece is currently on view through June at the Princeton Arts Council in Princeton, NJ.