and gives a better finish. It’s an art learned through practice.Siphon-feed guns
The most common siphon-feed gun is the legendary Binks #7 design.
This gun has been copied endlessly and import versions are available
everywhere from Harbor Freight to Walmart. The only thing to keep in
mind with the economy-grade copies is that the cheapest versions are
almost always “one-use wonders,” at best. It is hard to purchase a decent
siphon-feed gun for less than $40. Siphon-feed guns use additional air
pressure to pull the paint up from a siphon tube in the cup below the
gun. This means there is more over-spray with a siphon-feed gun than
with an HVLP, and therefore more wasted material. It is also hard to use
up the last of the material that is in the cup — another disadvantage to
the siphon-feed. Paint often sloshes away from the siphon tube, which
causes spitting and sputtering. Top-feed guns don’t have this problem,
because the paint falls from the cup into the spray chamber via gravity.
Pressure-pot guns
Pressure-pot guns are built similar to siphon gun heads, but have
hoses leading to a large-capacity pot that sits on the ground. These
systems are most commonly used when painting very large projects that
require a lot of paint to be mixed at once. Since most hobbyists won’t
ever need this feature, there’s little reason to go with a pressure-pot
design. It makes more sense to mix paint in a 5-quart mixing cup and
refill a regular-size gun more often than it takes to go through the extra
effort of cleaning the pressure pot and lines in addition to cleaning the
paint gun itself. Even “cheap” pressure pots aren’t cheap, so unless the
project in question is a Peterbilt with a matching trailer, it’s best to stay
with the more traditional top-or bottom-feed designs.
Setting up the gun
Once the style of gun is selected and the type of product to be sprayed
is selected, it’s time to actually set up the gun. The settings for most
paint guns are pretty close from the factory, and seldom are the