These two working models of ‘Pythagoras cup’ and ‘Devious Pythagoras cup’ demonstrate the use of syphons to fool greedy students since ancient times. 

How to print:

Print either ‘Pythagoras’ or ‘Devil's’ (I forgot the proper name while saving it) cup.

For ‘Pythagoras cup’: Print with the whole cup as one, or in the two halves in order to optimise print time and support usage, then glue them neatly together (super glue works fine).

For ‘Devil’s' cup: Print either whole or in the two halves and glue them together. I have also uploaded the files for the two halves with the hole increased to 5mm, this allowed for better flow out of the cup. Make sure to only print either the whole cup, the two standard halves, or the two 5mm hole halves.

I recommend printing either model as two halves, and for the devious cup I recommend printing the 5mm hole version halves.