by Ron Joseph
Spray Gun for Spray Metallic Base Coat
Q. Can we use electrostatic guns to spray the 2 coats of metallic base coat
(the paint contains aluminum flakes)? Note: we spray metallic then clear coat
wet on wet.
Is the air cap and needle of the electrostatic spray gun equivalent (given
the same atomization properties & metallic distributions) as normal pneumatic
gun (i.e., cap 797 & needle 1.2 )?
A. The spray guns used for electrostatic spraying should have equivalent fluid
tips, air caps and needles sizes when compared to conventional air spray equipment.
Aluminum metallic paint is applied in a dry spray method to prevent flooding
and disorientation of the metallic flecks. This technique applies to all types
of spray equipment. Because the paint is already conductive, you will need to
isolate the pressure pot from ground, just as if you were using a waterborne
paint. If I were you, I would confirm this with the vendor of your electrostatic
There may be some adjustments to the volume of fluid out put to achieve proper
film application. This may be accomplished by increase pressure on the pressure