Peristaltic Pump

Peristaltic Pumps move liquid by pushing rollers along a segment of silicone or rubber tubing, which propels liquid through the tube. This peristaltic pump is meant to be 3D printed. All of the files named "Peristaltic Pump Part..." can be printed. Parts that need to be obtained separately are: a silicone tube (ID: 4mm OD: 6mm), an electric motor (Standard Spur Gear Motors on ServoCity), four 3 cm M5 bolts, four M5 nuts, four bearings with an outer diameter of 1.3 cm and an inner diameter of 0.4 cm. To assemble, take "Peristaltic Pump Part 1" and put two bearings on both of the axles furthest from the center. There should be two bearings per axle. Next, take "Peristaltic Pump Part 2" and affix it to the top of "Peristaltic Pump Part 1," right on top of the bearings. "Peristaltic Pump Part 2" has a small indentation at its center; when attaching to "Peristaltic Pump Part 1," make sure it's facing "Peristaltic Pump Part 1." Next, take the electric motor and set it into the large cylindrical cavity on the back of "Peristaltic Pump Part 3." Make sure that the electric motor's axle fits through the small hole on "Peristaltic Pump Part 3" and that the electric motor fits flush against the back of "Peristaltic Pump Part 3." Next, fit the silicone tubing in a U shape inside of the front side of "Peristaltic Pump Part 3" so that the two ends of the silicone tube fit through the two trenches on the front side of "Peristaltic Pump Part 3." If you're unsure how to fit the silicone tube in the pump, take a look at the Peristaltic Pump.step file; it has the tube included. Once the tube is in, fit the Peristaltic Pump Parts 1 and 2 assembly onto the axle of the electric motor. Make sure that "Peristaltic Pump Part 1" (which has a hole in its center) is the side that fits directly onto the electric motors axle. Also, make sure that the bearings are making complete contact with the silicone tube. Next, fit "Peristaltic Pump Part 4" over the silicone tube and two trenches on "Perista