Bullitt - something I've been meaning to ask Tim at Envy for a while but you may be able to answer.......
When you have a scratch (even a really light one) it always seems to be white underneath which I've always assumed meant it was down to the undercoat.........so how does machine polishing get rid of it?
I'm only using a DA so its never going to do the proper corrections but I've never understood how it works?
Or am I looking at something thats not undercoat?