Fret File set - includes holder and narrow, medium and wide removable file inserts
Includes a handle/holder and the following-
Narrow file insert - suitable for frets up to 1.6mm (0.063") wide
Medium file insert - suitable for frets up to 2.5mm (0.100") wide
Wide file insert - suitable for frets up to 3.2mm (0.125") wide
Made in U.S.A.
This fret file set has been designed to be used for almost all fretwire sizes from the small wire used in mandolins right through to the jumbo wire used in electric guitars and basses. The tool consists of a handle which fits three different sized burrs; bolt holds the burr in place while the file is being used. Individual burrs can be bought individually as they wear out.
When frets are installed into a fingerboard they are never completely straight even if great care was taken in installing them. Therefore the frets must be levelled or 'dressed' so that they are straight and the guitar will play with minimal fret buzz.
Once the frets have been levelled using a fret levelling file they need to be crowned so that they have a nice round profile on top so the strings will play clean and in tune. A fret file has a concave edge which is exactly the right profile to shape the tops of the frets back into this curved shape.
The fret is rubbed with the fret file until it is rounded off. It is a good practice to leave a very narrow flat-spot on the top of the frets to ensure you don't go to far with crowning them. After crowning with the fret file various grades of sandpaper and steel wool are used to polish the fret. The fingerboard should be taped or a fingerboard guard used to avoid scratching the fingerboard.