What can I print with the Fab@Home?

The Fab@Home can print with nearly any kind of liquid or paste that you can imagine dispensing from a syringe. To date, we have used household silicone rubber caulk, epoxy, cheese, chocolate (with a small heater attached to the syringe tool), cake frosting, ceramic clay (when mixed with sufficient water), PlayDoh, and gypsum plaster. This is merely a list of the materials we have had time to play with - many, many more materials are possible.