What materials can be used with the Fab@Home?

The Fab@Home can work with almost any kind of liquid or paste that you can imagine dispensing from a syringe. We have tried using 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, and it is the intent of Fab@Home to make it easy for you to try your own materials. A good material is soft/fluid enough to push through a syringe, but firm enough that it will "stack up".