Lacquer Spraying Tips

Why Spray Lacquer?

Lacquer delivers a beautiful, durable finish faster than any other option. It dries in minutes, can be recoated in 30-60 minutes, and produces a smooth, professional appearance. While it requires spray equipment and proper ventilation, the results and speed make lacquer the finish of choice for many professional shops.

Types of Lacquer

• Nitrocellulose lacquer: The traditional choice. Dries fast, repairs easily, develops a warm patina over time. Susceptible to yellowing.
• CAB-acrylic lacquer: Water-white clarity that won’t yellow. Excellent for light-colored woods and contemporary furniture.
• Pre-catalyzed lacquer: Contains catalyst from the factory. More durable than standard lacquer with similar application properties.
• Post-catalyzed lacquer: Mixed with catalyst before use. Most durable but has limited pot life once mixed.

Equipment Requirements

Successful lacquer application requires:

• Spray gun: HVLP guns work well for most woodworking. Set fluid needle to 1.2-1.4mm for lacquer.
• Compressor: HVLP requires 5-8 CFM at 25-30 PSI. Ensure adequate capacity for continuous spraying.
• Ventilation: Essential for health and safety. Spray booths or outdoor spraying with appropriate respirator.
• Respirator: Organic vapor cartridge rated for lacquer solvents.

Spraying Technique

1. Thin properly: Most lacquers need 10-25% lacquer thinner added for spraying.
2. Set spray pattern: Adjust for 8-10 inch wide fan pattern.
3. Keep consistent distance: Maintain 6-8 inches from the surface.
4. Overlap passes: Each pass should overlap the previous by 50%.
5. Light coats: Multiple thin coats beat fewer heavy coats. Avoid runs and sags.
6. Sand between coats: 320 grit between coats, 400+ before final coat.

Common Problems and Solutions

• Orange peel: Too little thinner, too far from surface, or low air pressure.
• Blushing (white haze): Humidity trapping moisture. Add retarder or spray in drier conditions.
• Runs and sags: Too much material applied. Use lighter coats.
• Fish eyes: Contamination from silicone. Clean thoroughly or add fish-eye eliminator.