I did a search. I really did. I am getting heavier into guitar and bass repair at my store. What tools and I am truly needing for this kind of stuff? I am mostly doing setup type of stuff: nut filing, fret leveling, etc. I need to get my own tools instead of borrowing them from everybody else. I'm mostly confused with types of files. LMI offers tons of different ones for frets and such. Which are better? Are the fret files that have interchangeable rasps preferred over the multiple sets?