How to Properly Mix Paint Additives to Prevent Spray Gun Nozzle Buildup

In automotive refinishing, improper paint mixing is one of the primary causes of spray gun nozzle buildup. Even when using a LVLP Spray Gun Energy-Saving, High-Efficiency system, incorrect ratios can lead to clogging, poor atomization, and costly rework.

1. Understand Additive Functions
Reducers control viscosity, hardeners initiate curing, and additives improve flow or anti-cratering. Misuse leads to residue accumulation inside the nozzle.

2. Follow Manufacturer Ratios Precisely
Always mix by volume using calibrated cups. Overuse of hardeners increases solid content, accelerating buildup.

3. Filter the Mixture
Use a fine mesh filter before pouring into the cup. This prevents particles from entering the air spray gun.

4. Control Viscosity
Use a viscosity cup to maintain optimal flow. Too thick paint increases nozzle deposits.

5. Clean Immediately After Use
Flush with appropriate solvent to prevent curing inside passages.

This workflow ensures consistent spray patterns and extends equipment life.