I like the way the Oxpho-Blue turned out, it also has not worn off as of yet. I may have used a heat gun for each coat but that was not in the instructions. I used the metal prep instructions from a Blue Wonder kit and the instructions on the Oxpho-Blue bottle.
Both instruction sets are linked below.
Oxpho-Blue instructions: http://www.brownells.com/userdocs/le...-546forWeb.pdf
Blue Wonder Instructions: http://www.bluewonder.us/BlueWonderG...tructions.html