when the plasti-dip dries.. you can rub it off..
I used this thread as a guide to help me when I was doing mine..
DIY - Matte Black Emblems - Plastidip, no emblem removal required! - Club Lexus Forums
There wasn't really any prep, I just washed my runner the day before and was clean when I applied the plasti-dip on to the emblems..
no sanding not priming.. just a clean surface..