Five pieces are 3D-printed to form the housing for each pump. In addition, each pump is composed of a Teflon-coated lead screw, an Arduino Nano V3, a Pololu Micro stepper motor driver, and a NEMA ...

useful things are regularly 3D printed too. A great example is this centrifugal water pump that can really deliver the juice, courtesy of [Connor]. The pump’s housings and impeller are all 3D ...