A desktop 3D printer you can build in a couple hours. Print plastic parts you design or download - even parts for another printer. This all-in-one 3D printer kit can be assembled and printing in a couple of hours. Other kits will not only take you many more hours to build, they will also have hundreds more parts, and they will cost more. My design also does away with the finicky calibration and adjustment from which most 3D printers suffer. This is the printer a kid could put together. We assemble the electronics, we assemble the hotend, and we put the connectors on all the motors and components... no soldering required!