Recommended 3rd party tools:
1. Neck cradle/support.
2. Notched straight for your scale length
3. Fret Rocker
4. 600, 1,000, and 1,200 fine sandpaper.
When it's time for a complete fret level, FretMaestro:
FretMaestro delivers the highest precision for fret level, radius, and crown work, doing all three steps in one step. CNC precision in the palm of your hand is engineered and built into every FretMaestro.
Like FretFixxer it is easy to use, anyone can now level their frets paralell to the fretboard as they should be, make the fret radius in perfect symmetry to the fretboard radius, as it should be, and shape the perfect crown too, all at the same time, one fret at a time.