StewMac Understring Fret Polisher

Understring Fret Polisher Polish your frets faster and with more precision using the Understring Fret Polisher. This stainless steel tool provides pinpoint control over fret polishing, all without needing to remove the strings. The tool’s concave, fret-shaped groove holds adhesive-backed abrasives, making it easy to change grits and get the exact polish you need in seconds. Any Grit You Need—Instantly Unlike traditional crowning files, the Understring Fret Polisher lets you instantly change to the exact grit you need. Just cut your abrasive to size and attach it to the groove. Our favorite abrasive is Kovax Tolecut, known for its ultra-fine polishing and long-lasting durability—one sheet gives you around 72 uses! The Fastest Way to Polish Frets Raise your strings with String Jacks, then simply polish the frets without removing them. The special ultra-thin shape fits where traditional files can’t, giving you incredible control. Whether working with strings on or off, this tool speeds up your fretwork and ensures a perfect mirror shine. Features: - Durable stainless steel construction - Instantly change grits for different levels of polishing - Works with strings on or off for fast, efficient fretwork - Fits all fret sizes Save time and get professional results with the Understring Fret Polisher, the perfect follow-up tool for fret leveling and dressing.

• Understring fret polisher: Stainless steel tool for precise fret polishing without removing strings
• Instant grit changes: With added Tolecut Abrasive Sheets, quickly switch between abrasives to get the perfect polish, with no need for multiple tools. Tolecut Abrasive Sheets Sold Separately
• Ultra-thin shape: Fits where traditional files can’t, offering excellent control and ease of use
• Durable and versatile: Made from stainless steel, fits all fret sizes, and works with strings on or off
• Fast fretwork: Perfect for use after fret leveling and dressing, saving time on every job