best way to polish brass frets?

[quadrogong]

I have a warwick 5 with those brass frets,

I figured perhaps Noxon
and some of that blue painter's tape.
...to cover the fingerboard wood,
but I had to ask.

[Trevorus]

Go the the music store and grab a brass polishing cloth for saxamaphones. They work great

[emils]

And don't use painters tape, make yourself one of these out of some tin or plastic:

[quadrogong]

thanks