Modded to suit motors with 2mm shafts. Editing the stl's was a struggle, and I was not able to fix the errors in the housing top.stl it will slice ok with cura but may not with other slicers.
EDIT: added some pictures. It works really well!
The motor is from a hair dryer that was broken being powered by an old 12v laptop battery pack.
| boat_impeller_2mm.stl | 188.4KB | |
| boat_impeller_housing.stl | 8.0MB | |
| boat_impeller_housing_top_v2.2.stl | 2.0MB | |
| impeller_mouter_mount.stl | 2.3MB | |
| washer.stl | 577.7KB |
