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PAINT SPRAYING HINTS
WARNING
NEVER attempt to spray unless you are wearing suitable, approved
respiratory and eye protection.
REMEMBER that some modern paints require specialist respiratory
protection...always consult the paint manufacturers instructions.
1. General Preparation
a. Ensure that the area in which you will be spraying is clean and dust free.
b. Connect spray gun to compressor via suitable flexible hose.
c. With no paint in spray gun, test system for air leaks.
d. Cover adjacent pieces of equipment to prevent overspray. Mask areas
of the article not to be sprayed.
e. Ensure surface to be painted is clean, dry and free from oil and dust.
Check paint manufacturer’s instructions for any special surface
preparation required.
REMEMBER - TIME SPENT PREPARING SAVES TIME SPENT FINISHING
2. Paint Preparation
a. Achieve the correct paint viscosity. This should be done according to
paint manufacturer’s instructions, and will vary according to type of paint, (see
paint thinning on page 9).
b. Having mixed the paint thoroughly in a separate container, pour into the
spray gun paint container through a fine filter.
DO NOT OVERFILL SPRAY GUN PAINT CONTAINER - three quarters full is maximum
c. It is usually best to experiment with a couple of practice spray coats on a
piece of material with the same type of surface as the article you wish to
spray, eg. metal for a car body panel, wood for a piece of furniture etc.
d. Some common problems:
PROBLEM
CAUSE
CORRECTION
Paint does not atomise
Paint is too thick.
Add thinners.
(comes out in blobs).
Air pressure is too low.
Increase air pressure.
Paint dries before hitting
Paint is too thin.
Add more paint.
surface, leaving it dry
Air pressure is too high.
Reduce air pressure.
with a rough texture.
Finish is pitted like
Air pressure too high
Reduce air pressure,
Orange peel.
or spray too close to
increase distance between
work.
gun and work.
