Yesterday I pulled all the frets out of my Epiphone P-Bass copy. It has a maple neck with what I assume is a lacquer (nitro?) finish. I used a razor to get under the frets and a flush cutter to get them out. The job came out remarkably clean, so I would like to do the best job I can finishing the fretboard. Today I went down to home depot and bought some 220 and 400 grit sandpaper, some 00 steel wool, and a can of Rustoleum "crystal clear enamel." I was originally planning to buy some polyurethane or epoxy, but apparently they don't come in spray cans. Am I right in assuming that spraying will yield a better finish than brushing (obviously, I don't own a real paint gun)? I read on the internet that enamel can be applied over lacquer, but not vice-versa. Is this true? So my basic question is, have I bought the right stuff? If not, what should I get? If so, is there anything important I should know about using it? Apologies if this has been covered before, but I couldn't find it with the search function. I've found some good information on the web, but much of it is too vague to answer my question.