Are we talking about the inside or outside? I used a wire wheel on both sides. I burned through a total of 4 of them. Ended up with those little wires EVERYWHERE! Eastwood says if the coating is thumbnail imprintable you can use this stuff
http://www.eastwoodco.com/jump.jsp?i...emType=PRODUCT
Then there is this stuff
http://www.classicchromeco.com/por15order.htm look at the bottom of the page.
I have not used either of these but I will next time.
Mike