May have a big job coming-up. This building has aluminium window frames, which are 'powder coated' (I think) and are green in colour. The colour has faded a lot, so the customer wants all the frames polished-up to restore the colour using 'T-Cut'. Soooo, is this the best product to use, or is there something easier/quicker to use, as this is going to be a time consuming job....this is a big building. Anyone done anything like this.