After basic propellers, with varying pitches, had been designed they needed to be ran through Solidworks simulations to asses whether the designs would withstand the forces endured as it would rotate in the water.
50 Newtons was applied to each blade acting perpendicular to the face.
After these simulations were ran it identified the highest areas of stress and thus the most likely areas to fail. After adding some fillets to the corners the amount of error indicated was to a low enough level to expect no failure while being used.
After the propellers had been printed they needed the support structures removed by hand. Due to the small size of the parts there was a breakage of one of the blades.