I've been trying various methods to remove the heavy Winter build-up of tarnish on our brass and copper.
It appears that using wirewool dipped in a little white vinegar removes it all very quickly, you then need to quickly neutralise it, dry it and polish as normal.
I made some laminated cardboard masks that fit over the mushroom vent bases, portholes and the pidgeon box portholes, these help keep the cleaning stuff off the boat roof. I just drew around them, cut out the circle, laminated them and re-cut the circle.
