Perfecting a Glossy Finish on Guitar Bodies (400, 800, 1200, 2000 Grit Guide)

A guitar’s finish isn’t just about looks—it also protects the wood and influences how it feels in your hands. Whether you’re building from scratch or restoring a well-loved instrument, sanding is essential for achieving a smooth, glossy finish. The right grit sequence makes the difference between a cloudy surface and a mirror-like shine.

Why Sand Guitars Before Finishing?

Even minor imperfections in wood or lacquer will show under stage lights. Sanding removes uneven spots, levels coatings, and prepares the surface for polishing. Skipping steps often leaves swirl marks or a dull finish.

Tools You’ll Need

• Wet/dry sandpaper sheets
• Foam sanding block for flat areas
• Microfiber cloths
• Spray bottle with clean water
• Polishing compound for guitars

Best Grit Sequence for Guitar Finishes

• 400 grit (50-pack) — Flattens lacquer layers and removes minor imperfections.
• 800 grit (50-pack) — Smooths out scratches from coarse sanding.
• 1200 grit (25-pack) — Refines the surface for high-gloss polishing.
• 2000 grit (50-pack) — Final stage for a mirror-like, performance-ready shine.

Step-by-Step: Sanding a Guitar Body

1. Prep the surface. Ensure the lacquer is fully cured before sanding.
2. Level with 400 grit. Start with 400 grit sandpaper to flatten uneven areas.
3. Refine with 800 grit. Use 800 grit sheets to smooth scratches and prep for polishing.
4. Polish with 1200 grit. Sand using 1200 grit sandpaper in circular motions.
5. Finish with 2000 grit. Apply 2000 grit sheets for a flawless, glossy look.
6. Buff and polish. Use a dedicated guitar polish or compound for the final shine.

Special Cases

• Matte finishes: Stop at 800–1200 grit for a smooth satin effect.
• Vintage guitars: Be cautious—removing too much lacquer may reduce value.
• Custom paint jobs: Extra care is needed to avoid sanding through the design.

Pro Tips

• Always wet sand to prevent scratches and overheating.
• Sand in long, even strokes across flat surfaces.
• Check progress under bright light for hidden swirl marks.

Aftercare

• Store your guitar in a case to protect the finish from dust and UV rays.
• Wipe down after playing to prevent fingerprints and sweat damage.
• Re-polish occasionally to maintain the glossy look.

FAQs

• Do I need to sand between lacquer coats? Yes, a light pass with 800–1200 grit ensures even build-up.
• Can I use a power buffer? Yes, but keep it at low speed to avoid burning through lacquer.
• What if I want a satin finish? Stop at 800–1000 grit instead of moving to 2000 grit.

Watch & Learn

With the right sanding sequence, your guitar can shine like a showroom model. Stock up on ultra-fine wet/dry sandpaper and take your instrument’s finish to professional standards.