Water Cooled Parametric Mini Pump

thingiverse

Creating my own version of Madox's Mini Centrifugal Pump, I utilized OpenSCAD and Geany text editor configuration. Introducing water cooling to combat motor heating at higher flows was a major innovation; output water is directed into the motor cavity and drains out through printed hoses at the back. ABS glue ensures complete sealing, while Oogoo orings keep water away from motor internals. The 7mm motor from a Syma S107 toy helicopter powers it, with a 3.7V lipo battery providing energy. PWM control offers excellent variable flow. Further optimization is possible, but overall, I am pleased with the initial design. Check out this video: http://youtu.be/BDCUHT5uvGk. For printing, set infill to 3 (top) and 3 (bottom), and adjust extrusion width to your specific value (0.4mm in my case). Use 0.15mm layers. However, Slic3r had some issues with print settings, like not infilling the second layer of Motor Cap, resulting in a sparse top layer. I will investigate this further.