Summary Applying the well-known so-called "Archimedes' Paradox" is built electric power generator. operating principle: http://www.slideshare.net/bulgakovatanya/argenarc Most of the parts made in the 3D printer, ABS, except for two water pumps, pipes and metal parts for the generator. We used a 90mm acrylic tube height 1000mm. You can use pipes made of any material. Pipes is better to choose a smaller diameter. The bottom part will be published later. Print Settings Rafts: Doesn't MatterSupports: Doesn't MatterInfill: 0,15