My 1998 Land Rover Discover 2 TD5, has developed a fair amount of surface rust above the windscreen.  I used my angle grinder with a wire brush attachment to clean the rust off.  To allow access to the rust without damaging the windscreen rubber, I formed a piece of steel and taped a weight to it to hold the rubber out of the way.  I then used my random orbit sander to smooth the edges of the paint.

I primed the cleaned steel with Dinitrol RC900 rust converter & primer, before using a silver aerosol for a top coat.  I now need to flatten the paint and buy the correct silver paint to use in my spray gun.