3D Systems helps product designers and engineers bring their concepts to life. The company's stereolithography apparatuses (SLAs) and other machines create 3-D prototypes of everything from toys to airplane parts. Its SLAs rapidly produce 3-D objects designed in CAD/CAM software in a process called solid imaging, which uses a laser to sculpt plastic resin materials into physical models. Its ThermoJet solid object printer also fabricates plastic models using a modified ink jet printing system. Additionally, 3D Systems sells the raw plastic and metal consumable material used in its machinery. Customers have included Boeing, MIT, General Motors, and Continental Tires.