Description

A handheld tool that atomizes a liquid (like paint, stain, or clear coat) into a fine mist and sprays it onto a surface for an even, professional finish.

How It Works
It uses compressed air (or in some cases, high pressure) to break the liquid material into tiny droplets and propel them in a controlled spray pattern.

Main Types

HVLP (High Volume, Low Pressure): Most common for detail work and automotive finishing. High transfer efficiency (less overspray, more material on the surface). Requires a high-volume air source.

LVLP (Low Volume, Low Pressure): Similar to HVLP but designed for smaller, lower-CFM compressors. Good for detail work.

Conventional (High Pressure): Older style, uses high air pressure. Faster but creates more overspray and bounce-back, using more material.

Airless: Uses a high-pressure pump to atomize the fluid without compressed air. Common for house painting, coatings, and thicker materials.

Electrostatic: Uses an electrical charge to attract paint particles to a grounded surface, reducing waste. Used in industrial applications.

Key Components

Fluid Cup/Container: Holds the material.

Nozzle/Tip: Controls fan pattern and material flow.

Trigger: Controls air and material flow.

Air & Fluid Adjustments: Regulate spray pattern width and material volume.

Air Cap: Shapes the air stream to atomize the material.

Primary Uses

Automotive Painting: Base coats, clear coats, primers.

Woodworking: Staining, lacquering, sealing.

Industrial Coating: Applying protective coatings to machinery.

General Painting: Large surfaces like walls, fences, and furniture.

Critical User Tips

Thin & Strain Material: Ensure paint is properly thinned to manufacturer specs and strained to prevent tip clogs.

Adjust for the Job: Test spray pattern and adjust air pressure, fan width, and fluid flow on cardboard before starting.

Maintain Proper Technique: Keep gun perpendicular to the surface, move at a steady speed, and maintain a consistent distance (usually 6–8 inches).

Clean Immediately: Flush and clean the gun thoroughly with appropriate solvent after every use to prevent hardening and damage.

Use Safety Gear: Always wear a respirator, goggles, and gloves appropriate for the material being sprayed.

Bottom Line
A spray gun is the essential tool for achieving a smooth, factory-like finish on a wide variety of surfaces. Success depends heavily on choosing the right gun type, proper setup and technique, and meticulous cleaning.