The Ultimaker 3 which prints with both PLA and PVA
Materials:
PLA: Polylactic Acid is a biodegradable plastic material derived from cornstarch. This is the material that the 3D objects are made from.
PVA: A water-soluble material used to print the supports. Once the print is complete, these supports can be removed simply by placing the item in water until it has dissolved away leaving your completed 3D object.