The FRTLZR® System — Precision Tools for Guitar Setup & Fretwork

FRTLZR® is a German-engineered brand built around one principle: guitar setup should be structured, measurable, and repeatable—not guesswork.

We specialize in high-quality fretwork tools designed for precision, durability, and consistency—without the premium price tag typically associated with professional luthier equipment. FRTLZR® makes affordable guitar setup tools accessible to musicians, technicians, and builders who demand accuracy but don’t want to overspend. Our tools are engineered to deliver professional results while remaining cost-effective, making advanced fretwork achievable for everyone from beginners to experienced luthiers.

Instead of isolated tools, FRTLZR® is designed as a complete workflow system for guitarists, builders, and luthiers. Each product belongs to a defined stage of maintenance—from diagnosis to final fret refinement.

The Guitar Setup Workflow

Every professional setup follows a clear sequence:

1. Diagnose (identify issues)
2. Leveling (correcting nut slots or frets)
3. Fret refining (shape, refine & maintain frets)
4. Finish (polish & optimize feel)
5. Guitar Setup for optimal playability

FRTLZR® tools are designed to support each step with precision, control, and clarity.

Stage 1: Diagnosis & Measurement

• FretBanger
  Dual-function tool for detecting fret irregularities and measuring string action.
• Precision Feeler Gauges
  Precise measurement of neck relief and setup tolerances.
• Checkcard
  High-clarity reference tool for fast string action evaluation.
• CutNutOrNot
  Non-invasive nut slot height checker used before any cutting or adjustment.

Stage 2: Fret Leveling

• FATBEAM 450mm
  Full-length fretboard leveling beam for precise correction.
• FATBEAM 150mm
  Compact beam for localized spot leveling.
• Fretshaper
  Spot-leveling tool for controlled correction of individual high frets causing fret buzz or dead spots.

Stage 3: Fret Refining (Shaping, Refinement & Maintenance)

• FretKata
  Beveling file for controlled fret end shaping and fret sprout correction.
• XXXL Diamond File
  Fret end dressing and refinement after leveling and beveling.
• Damon Fret Crowning File
  Restores fret shape after leveling for optimal playability.

Stage 4: Finishing & Polishing

• Fret Polishing System
  Multi-stage polishing system for smooth fret surfaces.
• Polishing Grit Set
  Progressive abrasives for controlled fret finishing.

Stage 5: Final Guitar Setup

After fretwork and polishing, the guitar or bass is ready for final truss rod adjustment, string action setup, and string installation aligned to the fretboard radius for optimal playability.

• FRTLZR Checkcard
  Final setup reference tool used to quickly verify string action across the fretboard.
• FRTLZR Radius Gauges
  Tools used to confirm matching curvature between frets, bridge, and setup components for ergonomic string alignment.

Supporting Setup Tools

• StringNuts
  Modern string trees for improved string movement and tuning stability.
• StringWing
  One-piece string winder for quick and smooth string changes.
• Drill Bit Winder
  Converts a cordless drill into a fast string winding tool.

Design Philosophy

• Precision through simplicity — fewer variables, better control.
• Easy, ergonomic & accessible design — intuitive use, ergonomic handling, and accessible pricing.
• High-quality fretwork tools at fair prices — professional performance without breaking the bank.

Built for Guitarists, Builders & Luthiers

FRTLZR® tools are used by musicians, technicians, and builders worldwide. The goal is simple:

make guitar setup easier, more ergonomic, and more understandable.