Polish Brass Instruments: 600?1000?2000 Grit

Trumpets, trombones, and saxophones lose their brilliance over time due to oxidation, scratches, and handling. To restore their shine, carefully sand and polish brass surfaces with 600 ? 1000 ? 2000 grit, followed by brass polish. This method refreshes tone quality by improving airflow surfaces and revives visual appeal.

Why Sand Brass Instruments

Brass tarnishes naturally, and surface scratches dull its look. Light sanding smooths imperfections, preparing surfaces for polish. Done correctly, this enhances shine without altering sound quality or damaging delicate tubing.

Tools & Materials

• 9×11 in wet/dry sandpaper sheets: 600, 1000, 2000 grit
• Foam sanding pads for curves
• Spray bottle with water
• Brass polishing compound
• Microfiber cloths
• Masking tape (to protect joints and valves)
• PPE: gloves, safety glasses, respirator

Recommended Grit Sequence

• 600 grit — Removes tarnish, small dents, and scratches.
• 1000 grit — Refines surface and increases smoothness.
• 2000 grit — Prepares metal for mirror polish.

Step-by-Step: Brass Instrument Polishing

1. Disassemble instrument. Remove valves, slides, and pads to protect delicate parts.
2. Sand with 600 grit. Use 600 grit (25-pack) wet to cut tarnish and shallow scratches.
3. Step to 1000 grit. Switch to 1000 grit (50-pack). Smooth evenly, maintaining curves.
4. Final sanding at 2000 grit. Finish with 2000 grit (100-pack). Brass should look satin-ready.
5. Polish. Apply brass compound with microfiber cloth until mirror shine develops.
6. Reassemble instrument. Ensure all moving parts are lubricated and aligned.

Special Cases

Lacquered brass: Avoid sanding—strip lacquer first, then polish raw brass.
Antique instruments: Preserve patina; light polish only.
Dents or deep scratches: Professional repair needed before sanding.

Pro Tips

• Sand lightly—excess pressure thins brass walls.
• Work with water to prevent heat and clogging.
• Use foam pads for curves and bell flares.
• Always polish with soft cloth—never harsh abrasives.
• Test polish in hidden area before applying widely.

Aftercare

• Wipe instruments after playing to reduce tarnish.
• Apply protective lacquer or wax for longer shine.
• Store in dry cases—humidity accelerates oxidation.

FAQs

• Does sanding affect sound? No—surface microns are removed without altering acoustics.
• Can I polish lacquered brass? Only with non-abrasive cleaners—sand raw brass only.
• Why stop at 2000 grit? Beyond this, compounds are more efficient for high gloss.
• How often should I polish? Light polish every few months keeps brass gleaming.

Video: Brass Instrument Polishing

Closing: Brass instruments regain brilliance with 600 ? 1000 ? 2000 grit sanding and polish. Done carefully, the process enhances beauty while preserving playability and sound quality.