Water screw vessel

This thing operates with a 6 mm wide and 90 mm diameter rubber band.

There is 2 different “screw” options: one thread with 45 mm pitch and another which has 3 threads and 180 mm pitch. The latter is supposed to move faster and travel longer.

Print instructions:

1. The inside hook of the tail part is designed so that it doesn't require supports on top of it so make sure there is none! Those would be quite hard to remove.
2. Bearing balls work better when infill is 100%
3. See pictures for designed printing orientation! The STL-files are not oriented correctly by default.
4. Layer height not critical. Balls roll smoother with smaller heights.

Build instruction:

1. Place bearing balls to the grooves on the nose part.
2. Place the bearing cup on top of the balls.
3. Stick the hook straight part through the plate.
4. Put super glue into the rectangular hole in the nose part.
5. Stick hook and plate into that rectangular hole.
6. Attach the rubber band to the tail part.
7. “Thread” the middle part with the rubber band and connect tail to middle part.
8. Attach rubber band to the hook glued onto nose and connect middle part to the bearing cup.

How to operate:

1. Find water.
2. Rotate the tail and middle part together COUNTER CLOCKWISE as much as you dare and then hold.
3. Place the vessel into the water.
4. Observe as the vessel screws away!
5. Optional: swim to get it back.