Fret Forensics and Sanding Beam https://sixstringers.com/wp-content/uploads/2026/11/Fret_Forensics_and_Sanding_Beam.mp4 Using a sanding beam to level frets is a widely accepted popular myth. Reality is not myth, sanding beams are archaic crude tools that were designed for sanding wood, not leveling frets. It is in fact impossible to level frets with a sanding beam.