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spray guns for powder coating

updated sat 30 jun 01

 

george koller on thu 28 jun 01


> Just a guess, but it sounds like a system for applying electrostatic
> paint - a really neat (literally!) way to coat metal surfaces. Cars,
> refrigerators. Where did you see the ads?
> Laura in Md. hankerin' to paint an appliance or two


Jim,

Ad is between lawn furniture & welding supplies in my Harbor Freight catalog. Kit
price is 99.99 USD. (1-800-423-2567 / harborfreight.com)

I did some more research and it seems these guns are used to apply powders that
must then be baked in an oven. Electrostatics are involved, but not clear to me
yet how. Somebody I asked that knows something about them said they work on same
principle as a copier. (Are you listening Howard Martin?).

They are environmentally friendly because no solvents end up escaping into the
atmosphere. The example I found was patio furniture. We've been doing some
shopping so I think I know which ones use this technique.

What has occurred to me is that perhaps moisture could be used to selectively
"activate" areas of a clay or glaze surface somehow - then this thing could blow
various stains/ maybe finely ground oxides out?. Expect the overspray powder
could then be removed from the dry surface with an air gun. Something that
becomes sticky when wetted should not be too difficult to find, maybe CMC?

regards,

george

clifford Ross on thu 28 jun 01


gO TO HARBORFREIGHT.COM FOR THE SPRAY GUN, OR FIND eASTWOOD CO.
>
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george koller on thu 28 jun 01


Noticing ads for powder Coating spray guns in my catalog for first
time. Wondering if anybody knows about these things. Perhaps they have
been around for awhile but only now becoming popular? Our HVLP
spray guns with Gravity Feed work pretty well, but have fairly short
life, and can get finicky real easy. Tend to plug after awhile.
Perhaps these powder coating sprayguns might be somehow useful
for glazes somehow?

Advertisement implies they are easier to clean, and "cover better". Low
air volume requirements(2CFM for unit I am looking at). They use
"standard powder paints", what are these? Are they really "powders"?
The "kit" includes powder pistol, grounding cable, and a "spare electilizer"
(what the heck is that?).

Thinking this gun might be of some use to selectively add oxides or some
form of colorants in one way or another. Seems like if it sprays a dry
powder, it could be used to "stick" only where moist, and get "dusted off"
elsewhere. Wonder how fine the powders must be?


George Koller
Sturgeon Bay, WI - Door County
(920) 746 - 8705


Boat is loaded and aimed at Northport, MI. About 120 miles of nice cool
Lake Michigan water to float over to get there. I usually see about 5 boats.
Getting crowded out there.

clifford Ross on thu 28 jun 01


Thoseg uns are used to paint car parts mostly. Whatever is painted has to
be baked in an oven. Look up Eastwood Co. for info>
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>Send postings to clayart@lsv.ceramics.org
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Jim Chandler on thu 28 jun 01


Just a guess, but it sounds like a system for applying electrostatic
paint - a really neat (literally!) way to coat metal surfaces. Cars,
refrigerators. Where did you see the ads?
Laura in Md. hankerin' to paint an appliance or two

clifford Ross on fri 29 jun 01


>>These systems are used to spray powder on a metallic surface, not clay.
Use an airgun or something similar. Cliff in Myrtle Beach>
>Jim,
>
>Ad is between lawn furniture & welding supplies in my Harbor Freight
catalog. Kit
>price is 99.99 USD. (1-800-423-2567 / harborfreight.com)
>
>I did some more research and it seems these guns are used to apply
powders that
>must then be baked in an oven. Electrostatics are involved, but not clear
to me
>yet how. Somebody I asked that knows something about them said they
work on same
>principle as a copier. (Are you listening Howard Martin?).
>
>They are environmentally friendly because no solvents end up escaping into
the
>atmosphere. The example I found was patio furniture. We've been doing some
>shopping so I think I know which ones use this technique.
>
>What has occurred to me is that perhaps moisture could be used to selectively
>"activate" areas of a clay or glaze surface somehow - then this thing
could blow
>various stains/ maybe finely ground oxides out?. Expect the overspray
powder
>could then be removed from the dry surface with an air gun. Something that
>becomes sticky when wetted should not be too difficult to find, maybe CMC?
>
>regards,
>
>george
>
>___________________________________________________________________________
___
>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.
>
>