Buffing and polishing a prop is a NO NO!
Airplane is not airworthy until a prop shop repaints it and signs off on it.
There are very specific requirements for painting a prop including surface prep, primer etc.
When a propeller manufacturer’s data specifies that major repairs are permitted to a specific model blade or other propeller component, only an appropriately rated repair facility may accomplish those repairs.
An FAA-certificated mechanic with at least a powerplant rating can accomplish all other propeller maintenance and minor repair by using the practices and techniques specified in Advisory Circular (AC) 20-37E and in the propeller manufacturer’s service data.
Some maintenance and minor repairs in this category are the removal of minor nicks, scratches, small areas of surface corrosion,
painting, and minor deicer boot repairs.
