Printer Types There are various types of 3D printers on the market today. We'll be reading about several of them here. Stereolithography Printers Stereolithography printers, also known as SLA printers, are a relatively new technology. They are faster than traditional extrusion printers, but also have their drawbacks. Click the link to find out more. Extrusion Printers Extrusion printers are the most commonly found type of 3D printers. They're inexpensive, but they also have their drawbacks. Click the link to read more.