material is lost in overspray due to the higher air pressure required to
draw the paint up through the gun. Regardless of gun type, a disposable
filter should be installed on the end of the air hose where it attaches to
the paint gun. This will ensure that moisture from inside the air hose
does not get in the gun.
With the primer gun filled and ready to spray, it’s time to set the
pattern. Using the knobs on the gun (two or three, depending on the
gun), adjust the spray pattern and fluid needle for the best performance.
Spray a test panel to ensure the fan pattern isn’t too wide or narrow and
the fluid isn’t set too high. As a side note, don’t try to compensate for too
much fluid by cranking up the air pressure; just adjust the fluid knob so
that the trigger won’t come back as far. Epoxy applies best in one to two
medium, wet coats. It has a medium build so it can fill some
imperfections in the surface. For the most part, two good coats are
better, although that increases the dry time quite a bit. When re-coating
the surface, wait one hour for one coat or overnight for two coats of
primer (assuming about a 77 degree F temperature). One good feature of
epoxy is that it can be sprayed “wet on wet” with a top coat and still
have a good chemical bond. This means putting down the primer and
applying color over the top of the primer without sanding. This is really
handy when spraying cast parts that are hard to sand.
singke
(singke)
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