Cupping a propellor how much difference dose it make

I made this video to give you an example of how much difference cupping a prop can make.
Its on the extreme side but it shows the difference it can make

[@kungpho7325]

It’s that easy and simple to do! Ohh man I’m giving it a go cheers mate

[@kizzjd9578]

Is it worth repairing a worn out stainless prop?

[@merc625]

Yeah if you can find a good prop guy

[@saodykol]

It work

[@merc625]

Yeah give a crack mate just start off gentle and don’t hammer in it to hard