Mini waterpump
thingiverse
Im trying to cad up some mini waterpump so this might be helpful. There's lot of variations in pumps sizes and models and most of them is hard to get keep water from leaking everywhere. This uses 9V battery, small 24.3mm wide motor with 2mm shaft. If interested i can release part files also :)
Download Model from thingiverse
With this file you will be able to print Mini waterpump with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Mini waterpump.