||Make sure you have proper ventilation
in your work area and / or a chemical cartridge face mask. Your
health and safety should always be your first concern.
||Room temperature (65-75 degrees) is
optimal for spraying primer. Cooler is better than warmer.
Applications below 60 and above 80 degrees are not recommended.
||Make sure your primer is sufficiently
thinned to suit your environment and method of application. By
environment I am primarily referring to the room temperature. Warmer
temperatures may require more thinner to be added to your primer
mixture to help increase flow. Better flow means less sanding.
||Have the mold lines been removed? Sink
marks filled? Do any panel lines need to be scribed? Is the
surface scuffed for primer adhesion? Has the material been washed
with a detergent soap and thoroughly dry? Is the surface free of
dust and other contaminants? If so, then you're ready to prime the
||Agitate the primer prior to any
application. Chemical components settle quickly. If you're using an
airbrush jar periodically agitate it while airbrushing. If you're
using a color cup agitate the primer prior to refilling the color
cup while airbrushing.
||Apply one or two moderate coats, let
dry, then check the surface for flaws. Repair if necessary and
||Once you're satisfied with the quality
of the surface area then apply a heavy coat, let dry, then very
lightly sand with 3600 grit cloth. Heavy coats have better flow
qualities and fewer overspray problems but would have a tendency to
run without the lighter coats applied earlier to give them something
to help adhere to.
||Apply a heavy coat, let dry, then very
lightly sand with 4000 grit cloth.
Remember that the primer is there to
protect the surface area from the lacquer's hot solvent base. For this
reason no surface area should be exposed at this time. If so, repeat
primer applications until the surface is sufficiently covered. Allow
your completed primer application to dry overnight before applying any
Remember while priming to also spray the
underside of edges (body panels, wheel wells, etc.) to help prevent
chipping or flaking of primer and / or paint during later stages of
polishing and assembly.
Cleaning your airbrush equipment can be
done by using either primer thinner or acrylic lacquer thinner.