Printable Peristaltic Pump

This is my design of a peristaltic pump or hose pump if you translate it directly from german. I built this pump for reseach to gather basic hands-on knowledge of the inner workings. If you have a MakerBot/3D Printer you can start right away. I built it in a few hours with common parts i had at hand. Unfortunately you definitly NEED a very flexible silicone tubing, to get it really working. I did my first try with a short piece of tube i cut from our fish tank - this was definitely to hard for the ABS. unfortunately i was to eager to pump some water, so i did, but the contraption got too hot and broke. The Pictures are from the rebuilt, but this time i'm waiting to get the silicone tube. Currently there are no mounting holes for a motor. i used my electric screwdriver for testing. Gearmotor is planned, but i had to determine the required torque with this build.