Originally Posted by Knightelf
Yeah I read somewhere that people sprayed over it and used a tool to cut around the cap and peeled it off - just didn't know whether that would leave a rough edge, guess I shall experiment...
I'll probably do my wheels this weekend...
You shouldn't need and shouldn't use any kind of cutting tool because that definitely would leave a rough edge.
Check out youtube videos by dipyourcarcom. They have heaps of how to plasti-dip videos from grills, to wheels to the entire car. The videos cover the entire process from masking, to applying and then to peeling off the overspray areas.