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Finishing Academy Paint Booth Training


Choose one of these Aerospace Refinish Training Modules:

     


1.1 Introduction

1.2 Crossdraft

1.3 Downdraft

1.4 Airflow

1.5 Filter Replacement

1.6 Temperature and Humidity - Controlled Booths

1.7 Equipment

1.8 Fire Protection

1.9 Conclusion

1.4 Airflow

 

The airflow direction in a crossdraft booth should flow from ‘nose to tail’. An airplane has a preferred way of moving through the air and ‘nose to tail’ is the best and most logical way to design the booth. Eddies are reduced to a minimum when you examine the nose to tail airflow pattern.

Overspray from the paint gun will drop on its journey to the filter wall. In many cases this may cause blemishes if the painter does not cover sections of the aircraft downstream of the spray guns. It is best to work high to low and front to back in crossdraft booths.

It has been said that a downdraft booth is the best booth in which to paint cars, trucks, buses, railcars and farm equipment; in short anything you don’t have to paint the bottom of. Planes have vast areas that are on the underside (about 50% of the plane) and painting these areas positions the painter between the paint gun and the floor. Painters with a small amount of experience will find ways to avoid overspray that is directed toward them. But, paint overspray is always pulled away from the plane toward the floor filters in a downdraft booth.

In any case, the eddies set up by air rolling over the wing and the fuselage will cause problems in controlling overspray. It is best to work high to low when using a downdraft booth.

 

 

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