Spray Techniques – Configurations
Painting Inside Corners
When spraying corners the gun should be aimed into the corner, spraying along the corner, rather than spraying back and forth across the corner.
To avoid double coating the same area, use horizontal strokes to spray the area adjacent to the corner. Spray each side of the corner separately. A vertical pattern is often used.
To spray the outside of a corner, a straight-on method can be used. The adjoining surfaces are then banded.
Small/Vertical Flat Surfaces
When spraying small, vertical flat work piece configurations, the banding technique is used. Using a horizontal pattern, band the edges of the part. After banding the edges of the part, finish the part with horizontal strokes. First, spray the Class B side of a work piece (the side that will not be finished), then spray the Class A (finished) side. If there is any overspray turbulence, it will not appear on the Class A side of the work piece.
Long/Vertical Flat Surfaces
Spray long vertical flat surfaces with horizontal strokes in sections from approximately 18″ to 36″ wide. With practice, you will find the distance most comfortable to your needs. As on small vertical flat parts, use the same banding technique on each end of a long vertical flat part. Use the same triggering technique as with a smaller panel, but overlap each section approximately four inches.
When spraying a level or horizontal surface, always start on the near side of the part and work to the far side of the part: this technique allows the overspray to fall on the uncoated work. Some gun tilt will be necessary.
Small cylinder shapes, like furniture legs, are best sprayed with a narrow spray pattern, using three vertical strokes. A vertical pattern and stroke can be used, but the gun movement must be quicker to prevent sags and runs.
Spray smaller or medium diameter cylinders with lengthwise strokes. Spray large cylinders like a flat vertical surface, only with shorter strokes.