Stronger Driver for wind-up bathtub boat v5

Mike's wind-up bathtub boat is an amazing model that was very well designed. However I ran into an issue with the driver due to printing using an 0.6mm nozzle. It seems that with these printer settings the driver arms are only getting a single line of filament which breaks after 2-3 uses. This improved version makes the arms a little bit thicker to prevent that from happening as often and might also improve its durability when using an 0.4mm nozzle, but has not been tested.

Recommended to print with 100% infill for the best results.