A family-friendly drop-in workshop where we'll help you make a beautiful picture with a double pendulum harmonograph art drawing machine. We'll have two vintage 1980s harmonographs in operation, each with an assistant on hand. You pick a pen, we start the pendulums swinging, and a drawing appears. You can take your art home. For those interested, we can have a go at building a harmonograph from scratch using string and paper cups. We'll have a book about harmonographs to hand for you to browse.