I would like to reduce the shaft length of this motor by 5mm. Is it OK to use a Dremel and cut away the length from the shaft?

Reason : Mainly aesthetic. I have mounted it as a pusher and the prop sticks out too much from the rear of the aircraft.

Hi VC,

There is no harm in cutting the shaft as per your requirement, but make sure that you cover the motor with tape or cloth or remove the shaft before cutting as the small flying iron flings can stick to motor magnets which can harm the motor winding.

Hellyflyer

You should also consider future usage (different prop adapters that may possibly be used in future).

Thanks for the reassurance. Will take all necessary precautions.