Mini Centrifugal Pump

by Madox, published

Mini Centrifugal Pump by Madox Nov 20, 2010

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3D Printed Miniature Centrifugal Pump Prototype

Prototype only - uploaded on request. Improved version coming soon.

Youtube Video of it in action : youtube.com/watch?v=H102VH8a8bM


Super Miniature version of it here : thingiverse.com/thing:4857

Recent Comments

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That would be really daft, though. The point of this is to make a small pump simply, and adding shafts and stuff would add massively to the complexity. Also, although the UP! is a great machine, you'd be hard pushed to get much smaller due to issues with things like printing the holes for said shafts.

Perhaps better to make the whole thing watertight with a small motor, then you just seal it and drop it in the water to do it's job, with just a wire for power.

Yup, prints from the Up! can be watertight. Even if you use a porous material, CA always helps fix things :)

Have you consider having the motor NOT attached to the pump?

You can put the motor somewhere else, and transmit the movement through a flexible transmition (don't really know the correct name for it). The bulky parts (motor and gearbox) would be somewhere else, and the pump could be even smaller.


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The 'base cover' does not sit the pump high enough to draw in water if placed on the bottom of a tank. Change the base cover or elevate it to ensure the impeller just doesn't cavitate around doing nothing...

Updated with an extra STL file (BaseCover.stl) that stands the pump a bit higher ;)


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Skimbal on Nov 24, 2010 said:

Hey, I modified your design to print on a Makerbot and use a CD-Rom Motor.


Great thing. 8-)

Anonymous on Nov 24, 2010 said:

Looks great, but is it water tight? I know the output from the Dimension BSt printers is not water tight. Although I still want to find a motor and try this, even if it does leak.

Madox on Dec 11, 2010 said:

Yup, prints from the Up! can be watertight. Even if you use a porous material, CA always helps fix things :)

peter_ on Nov 22, 2010 said:

this is one of the neatest things i've seen on thingiverse yet! very well done!

trebuchet03 on Nov 21, 2010 said:

Have you measured the head? How high?

Madox on Nov 21, 2010 said:

Not yet...that'll require me to use the bathtub again :)

Too many bathtub Youtube videos already from me :

minipimmer on Nov 21, 2010 said:

Very nice design!

It is a pity that this kind of designs are hard to reproduce because of the dependence on the geometry of the DC motor. One good idea to solve this problem is to use, for example, motors from CD rom drives, which are really easy to obtain and are well standardized.

trebuchet03 on Nov 21, 2010 said:

Those motors are, generally speaking, low torque... Generally speaking, because I haven't taken apart every optical drive ever designed and produced :p

That said, it shouldn't be hard to reproduce - you'll need to design part of the housing to fit the motor you're using ;) Modularity can sometimes serve to the detriment of design :/

SayNoToMakerbot on Nov 21, 2010 said:

Releasing early is always good. :)

kutch on Nov 21, 2010 said:

I second that!!

Excellent work!! I have no hopes of being able to print at that resolution but can always dream...