everyone has their own technique,i only use steel wool for the initial rub of the corroded gunk with jiff,then use finer and finer wet/dry,then polish,those buffers are good,bunnings has good little sets that fit in your power drill,i normally dont use the block polish that comes in those kits,use autosol/mothers etc,,i also find silvo (not brasso,just makes black #$%* happen)works well as a final buff over.