Extrusion Printers Extrusion-type 3D printers are the most common printers on the market today. These printers take a plastic material ---local link here to filaments page--- and feed it through a hot nozzle, which applies the plastic to a flat build plate. These types of printers are relatively inexpensive. At this time, the da Vinci Mini ---link here--- can be purchased for a mere $179. Kits, ---link here--- which you need to assemble yourself, are even less expensive. This being said, industrial models ---link here--- can be very expensive, reaching into the tens of thousands of dollars. ---Table here--- Advantages and disadvantages