Metal polish on copper contacts is ok?

Hey guys

I was using a mech for about 2 weeks and it got patina pretty badly so i decided to polish it with copper polish,
I know for the outer body its ok to use polish after googling it but i cant find anything about the contacts it self
Most people say use eraser or alchole but since its copper i can use copper polish right?
I just cleaned the entire mod contacts and all with the polish just hope its ok
So i can do it next time too
It looks almost new and my contacts are super shiny…

Read more