I took my battered old iTouch to the buffing wheel at clubworkshop. The back is stainless, so I started with black buffing compound and heavy pressure to remove the original logo and all the scratches. I finished with the green buffing compound to bring out the final shine. Next I sprayed the back of the newly shiny iTouch with CerMark LMM-6000, loaded it into the Epilog Helix 60W laser engraver and printed my custom logo. After rinsing off the unbonded Cermark with water, voila the first (I think) iPad nano!