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What's The Difference Between The HVLP And Conventional Spray Guns, Used For Finishing?

Whether you're doing a refinishing job on awith a much lower pressure, so that more
simple woodworking project such as afinish ends up on the wood instead of in the
wall-mounted coat rack, or tackling somethingair.
more complex, such as refinishing your
grandfather's antique rolltop desk, you'llThere are two different types of high-volume
need a little knowledge and some basiclow-pressure spray gun systems on the market.
finishing equipment to get the job doneThe first utilizes pre-existing equipment,
right. There are two basic types of finishingbecause it converts the traditional spray gun
spray guns available on the market. The newersystem into a high-volume low-pressure
ones are high-volume, low-pressure guns, alsosystem. This is known as a "conversion
known as HVLP, and then there's "Oldhigh-volume low-pressure spray gun." With
Faithful," the conventional spray gun. Boththis system, the spray gun still runs off an
of these guns do a good job of putting onair compressor just as a conventional spray
finishes, but each has its own designgun does, but it uses much lower pressure,
differences that you will have to considerabout 25 pounds per square inch. It's not as
before  you  decide  which  you  want to buy.efficient as the newer turbine air system,
but it is still much better than a
Conventional spray guns operate at a basic,conventional spray gun and is a
high pressure. They connect to an aircost-effective alternative for someone who
compressor and the finish is "blasted" ontoalready  owns  an  air  compressor.
your project using this high pressure.
Because this high-pressure finely atomizesThe second type of high-volume low-pressure
the spray, in that it produces very finespray gun is the most efficient, and this is
particles, this gives a very nice smoothsuitable for someone who doesn't already own
application, whether it be a clear shellac,an air compressor. This spray gun operates
varnish or paint. Despite this excellent endoff of an air turbine instead of air
result, conventional spray guns are onlycompressor. This delivers an extremely high
about 30% effective. 30% of the finishvolume of air at very low pressure, about
actually ends up where it's supposed to go,four to six pounds per square inch. This is
on the wood. The other 70% is released to themore costly than an air compressor, but
atmosphere. This both wastes material and isbecause it is so much more efficient, it may
detrimental  to  the  environment  as  well.be worth the investment if you don't already
own  an  air  compressor.
The high-volume low-pressure spray guns are
new to those who like to tackleRegardless of whether you are using a
"do-it-yourself" projects. These gunshigh-volume low-pressure spray gun or a
increase transfer efficiency, which meansconventional spray gun, you still must
that much more of the finish medium isprotect yourself by spraying in a
actually transferred to the wood instead ofwell-ventilated area and use proper safety
wasted. Unfortunately, many of the solventsequipment, including a respirator. In
used today in wood finishing products areaddition, many manufacturers now produce
detrimental to air quality. Therefore, notseveral water-based finishes that are not
only is it industry standard to use theflammable. In addition, because they use
high-volume low-pressure guns, but it iswater as a base instead of something like
actually mandatory to use a high-pressurelacquer, they are much easier to use and also
low-volume gun, as ordered many localcause less harm to the environment than do
governments and state. With the HVLP system,traditional finishes.
air is delivered at much higher volume, but



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