Preparing Spray Gun | Matthews Paint

Now that we have our paint mixed, let’s talk about being able to
spray that freshly mixed paint. We have to make sure our equipment is ready too. Today’s market has two different types of
spray guns: typically HVLP and conventional. This is a good example of an HVLP gun. HVLP stands for high volume low pressure,
and that’s what this gun demands in order for it to work properly. The basic operating parts of a spray gun are
the air cap, the fluid needle, and then the fluid tip. The fluid tip will sit behind the air cap,
and this allows fluid to pass through the hole and to be atomized by the air cap. The adjustment for the amount of fluid coming
to the gun is done by the needle adjustment here by in or out. In gives less fluid, out gives more fluid. The fan pattern, or the width of the pattern,
is adjusted here on this side of jet B. This also has a digital gauge to help you
set your air pressure at the handle. Another style of gun, this is made by Iwata,
basically the same gun, except again we have fluid adjustment here, we have an air cap
here, fluid tip is behind that, and then the air regulation is done here at the handle
by diaphragm top regulator. That’s the basics of a spray gun. Now that we have our paint mixed and chosen
the gun we’re going to use, we need to load that gun and able to spray. This is very simple using a paint preparation
system. I’ve chosen a 3M system today. This system contains with a hard cup,
a disposable liner, to hold the paint. Once you have poured your paint in, the cap
goes on, which has an internal strainer — make sure you hear it snap —
and then the locking ring. Make sure the locking ring is tight. Take your spray gun, push down, turn one quarter
turn, and now you’re ready to spray paint.

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