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Spray Pattern Troubleshooting
How to Fix a Rough Finish or Specking
A rough looking finish or specking generally occurs when the material is not wet enough to allow even flow out after it has been applied. Video shows what this problem looks like and how to eliminate it while using an air assist spray gun.
- A rough looking finish or specking is generally caused when the material is not wet enough to allow even flow out after it’s been applied.
- Too much atomization air or poor operator technique can cause this problem.
- Reducing the amount of atomizing air or decreasing the tip pattern size can fix this problem.
- Adjusting the gun to part distance can also improve this condition.
Possible Reasons
- Too much atomization air
- Too much fan pattern adjustment
- Too much distance between gun and part
Best
Solution
- Decrease air pressure
- Decrease tip pattern size
- Adjust gun to part distance
Why is It Important?
- Increases wetness of the paint on the part
- Allows material to flow evenly
- Even / blended finish
