I never use a wire brush. It does work, but if you make any marks they will fill with the paste. My method is sand to approx. 400 grit, blow out the piece with a air gun. Ebonise if needed, then rub in the gilding/liming paste rubbing it in with a circular motion so you don't miss any bits. Leave for 20 mins. or so, then remove excess using kitchen roll and oil, cleans and finishes all in one. Continue with a couple more coats of oil as each one dries, then buff on a wheel.