This is a derivative of Skimbal's CD-Rom Motor Pump. I added a space for my Hose Adapter which makes it possible to use the pump with almost any hose.
My version is as well as Skimbal's designed for a CD-Rom Motor which you can get out of CD and DVD-drives. They are usually 6V DC motors, however I used 7.2V in the Video (not recommended for long running times). I also played a bit around with blender, so I added a rendered image and the Blender-file.
Use the OpenSCAD or the Customizer to make the adapter fitting to your needs (PumpHoseApapter.scad or http://www.thingiverse.com/thing:1494628).
You should not take a too big hose (Ø over 6mm) or you won't get a nice flow of your fluid at least not as high a with let's say a diameter of 4 or 3mm.
1) Print out your customized hose adapter, the casing, the base and of course the impreller. I used PLA, but ABS and PET will last longer especially when exposed to sunlight, water or other fluids.
2) Drill out the center of the impeller so it fits on the motor's shaft
3) Use a knife to cut the support tower out of the center of the casing
4) Press the motor firmly into the top of the casing
5) Press the impeller down onto the motor shaft, but not all the way. Leave a little space between the top of the impeller and the base of the housing.
6) Power the motor and use sandpaper against the spinning impeller to smooth out any high spots
7) Place the adapter in it's space (you might have to make it fitting with sandpaper or a file, be careful to not remove to much)
8) Press the base on
9) Attach your hose (you might have to fix it with a
Now you can pump fluids around. BUT be careful with hydrazin, nitroglycerin and other dangerous fluids or you might destroy a bit more then your pump.