search  current discussion  categories  tools & equipment - spraying 

hvlp sprayers: the basics again

updated thu 28 feb 02

 

george koller on mon 25 feb 02


> I'd like to know the same thing. If the picture is any indication the $99
> model doesn't come with a compressor...

Craig, anybody interested....

"True HVLP" (even the cheapest ones) DO NOT NEED A
COMPRESSOR. They can be purchased as a "complete system" with some sort of blower. "True HVLP" use truly Low Pressure and
truly High Volume. Don't blame me for the confusion, some
marketing guy got away with calling some modified compressor guns
"HVLP" and the world is stuck forever finding our way, one at
a time ,through this smoke and mirrors abuse of terms.


I don't know much about the expensive true HVLP models, would sure
like to know more if there are any experts out there! My $69.99 one
functions just fine but it is not a robust unit. It would be great to know and
understand what the next models up, and what the "Cadillac" versions
really bring to the glaze table. All I know for sure is that, as I have
written before, "I like my true HVLP better". It has given me a degree
of control I never had with the compressor pseudo/pretenders. I have now
worked with the 48 tiles I shot the other day, and they were more evenly
coated than ever before and I shot them in less time, also I'm pretty sure I
will learn more to like as I adopt to this new unit.

My reason for going on about the Harbor Freight true HVLP (ultra cheapo)
is that it represents a clean simple low cost entry into the world of glaze
spritzing. Anybody that knows compressors knows that there are a lot of
costs in not only the unit but, but water separators, perhaps other filters,
and maintenance. Plus they are noisy, and can take up a lot of space, and
they take a lot of electricity. And to pile on a little, they can be a little bit
dangerous. I've had a sticky shut of valve and the thing would run like crazy
and get very hot etc.

It will be nice to hear from other people that have tried any of these true
HVLP against a compressor version. My thought is that the "true HVLP"
have some real basic advantages. Which makes this whole thing a little
more interesting.... sometime more is less.


Best,

george koller
sturgeon bay, wi - door county

SAM YANCY on tue 26 feb 02


This a repeat of a spray gun issue question/answer I wrote about around July 01. If
harbor freight still has this spray gun I really recommend it.I use it all the time
with no problems. Here goes:
HI - suggest you check out harborfreight.com and order their HVLP Gravity Feed
Spray gun for $45.95. Item number 43430-75CA It's great for glazing with very
little overspray or dust - and most important LOW pressure.. I brought it to the
attention of the Pottery teacher at Skyline College last year. He bought on on my
recommendation. In a class room setting, it is used daily by many students with no
problems. I have four myself, two for glazing and two for painting. I was a long
time (20+ years) Custom auto/motorcycle painter before getting to my current LOVE
- POTTERY and CLAY so I have the experience with many many spray guns from pasche
to whatever. You can adjust this recommended gun from a 1/2 inch circle to a fan
width of about 6 inches. Trick is to put on WET coats (two) with about one minute
wait between coats. Also you can shade glazes with this gun. Very easy to do.
This spray gun is easy to clean in plain running water. The glaze should be
strained and about the thickness of cream for best results - its is important to
not clog the gun. Compressor of 1/2 horse (plus recommended) can be used as long
as you have an a storage tank of at least 10 gallons - this is a MUST. Do not buy
oiless or a combination compressor. You want one with a motor and compressor with
a drive belt between. You do not need a turbine high flow - low pressure
compressor. Harbor freight usually has what you need for about $200 or so. Don't
skimp on the compressor. Once you have one, you will always find a new need for
it. Actual pressure at the gun is about 5-6 pounds so no or very little overspray
and a very clean shop - also at least 80% of the glaze gets to your creation so
very little glaze loss. Sorry about the rambling -hope this helps you-all out
here. Sam (and Mary Jean) in FOGGY Daily City California, near the Beach. Peace!!!
P.S. If you want more info on how to use this gun or special techniques like
shading or pattern painting , send me a question.



george koller wrote:

> > I'd like to know the same thing. If the picture is any indication the $99
> > model doesn't come with a compressor...
>
> Craig, anybody interested....
>
> "True HVLP" (even the cheapest ones) DO NOT NEED A
> COMPRESSOR. They can be purchased as a "complete system" > with some sort of blower. "True HVLP" use truly Low Pressure and
> truly High Volume. Don't blame me for the confusion, some
> marketing guy got away with calling some modified compressor guns
> "HVLP" and the world is stuck forever finding our way, one at
> a time ,through this smoke and mirrors abuse of terms.
>
> I don't know much about the expensive true HVLP models, would sure
> like to know more if there are any experts out there! My $69.99 one
> functions just fine but it is not a robust unit. It would be great to know and
> understand what the next models up, and what the "Cadillac" versions
> really bring to the glaze table. All I know for sure is that, as I have
> written before, "I like my true HVLP better". It has given me a degree
> of control I never had with the compressor pseudo/pretenders. I have now
> worked with the 48 tiles I shot the other day, and they were more evenly
> coated than ever before and I shot them in less time, also I'm pretty sure I
> will learn more to like as I adopt to this new unit.
>
> My reason for going on about the Harbor Freight true HVLP (ultra cheapo)
> is that it represents a clean simple low cost entry into the world of glaze
> spritzing. Anybody that knows compressors knows that there are a lot of
> costs in not only the unit but, but water separators, perhaps other filters,
> and maintenance. Plus they are noisy, and can take up a lot of space, and
> they take a lot of electricity. And to pile on a little, they can be a little bit
> dangerous. I've had a sticky shut of valve and the thing would run like crazy
> and get very hot etc.
>
> It will be nice to hear from other people that have tried any of these true
> HVLP against a compressor version. My thought is that the "true HVLP"
> have some real basic advantages. Which makes this whole thing a little
> more interesting.... sometime more is less.
>
> Best,
>
> george koller
> sturgeon bay, wi - door county
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.

Kurt Wild on wed 27 feb 02


Sam Yancey wrote:

..............suggest you check out harborfreight.com and order their
HVLP Gravity Feed
>Spray gun for $45.95. Item number 43430-75CA .................

The above item doesn't appear when doing an on line search at Harbor
Freight Tools What I get when putting in the numbers you suggest above
is Item 43430-2VGA at $64.99. Would this be the same gun you are suggesting?

Kurt Wild
River Falls, WI 54022

email: kurtwild@attbi.com
web site: http://wwwpp.uwrf.edu/~kw77/
most current work: http://wwwpp.uwrf.edu/~kw77/Available.html