Craig Martell on sun 6 mar 05
Gene was commenting:
>I purchased a Paasche air brush some time back and decided to give it a
>try the other day. But the tip keeps clogging.
Hello Gene:
Are you wanting to cover large areas with the airbrush or do you want to
just do some detailed work? I've used Paashe VL's which are internal mix
airbrushes and they are fine for detailed work but not so hot for doing the
entire pot. The color and media need to be very thin to pass thru an
VL. I suggest screening thru a 100 mesh for an internal mix airbrush. For
large area spraying I use a Paasche 62 spray gun. They work fine and cost
about 50 Samolians.
I think that the Paasche airbrushes will do ok at 30 psi. I run the 62
spray gun at 40 psi and it does fine with medium to thicker stuff at
40. It has a relatively tight overspray area so glaze waste is minimized.
The Paasche H is an external mix airbrush and it does better with ceramic
applications.
regards, Craig Martell in Hopewell, Oregon.........recently back on Clayart.
Gene Arnold on sun 6 mar 05
I purchased a Pasche air brush some time back and decided to give it a =
try the other day. But the tip keeps clogging.
I thinned the glaze to the consistence of something like skim milk.=20
I sieved the glaze with an 80 mesh sieve but it still gets all clogged =
up.
What is the best tip size to use for glaze spraying??
What is the best mesh sieve to use??
What air pressure is the best??
How thin should the glaze be??
Any other tips or hints would be appreciated!!
Thanks!!
Gene & Latonna
mudduck@mudduckpottery.com
www.mudduckpottery.com
Dan Saultman on sun 6 mar 05
Gene,
Airbrushes should be called "water air brushes" because they work best=20=
spraying water, water color, colored dies etc. Although 80 mesh sieving=20=
is adequate an 80 mesh glaze can settle in your airbrush cup and become=20=
thick. Airbrushes are finicky about thick fluids. I have a few tools I=20=
gather up when airbrushing a glaze. A water spray bottle that can spray=20=
a stream or mist of water, a hand full of cotton swabs and a place to=20
point my airbrush as I test the spraying-other than on the piece. With=20=
my spray bottle I spray a stream of water into the paint cup before=20
each refill of glaze, spray a bit of clean water through the airbrush,=20=
dump it out and then add my next bit of liquid glaze to the cup. Only=20
use a small amount of glaze at a time. The cotton swabs will clean the=20=
nozzle with the needle still in the airbrush (carefully now). Pulling=20=
the airbrush needle out a bit will tell you if you need more clearence=20=
between the needle and the nozzel. If this works you will spray better=20=
but each time you push the air button you will get spray occuring (no=20
gradual control). I use a Pasche airbrush air compressor successfully=20
but if you have really weak air pressure that could be a problem. An=20
example of low pressure and a clean airbrush will produce a=20
spatter-like coverage. More air pressure will help spray thicker=20
material however. I've used a work shop air compressor and a large=20
Pasche airbrush and sprayed very large areas successfully. Additives=20
are available to make your glaze more friendly to airbrushing but in a=20=
commercial glaze they often create problems because the additives used=20=
can make the glaze stick in the airbrush. Learn to take your airbrush=20
completely apart =97 you'll learn whether you want to or not. Become one=20=
with your airbrush grasshopper.
Dan
Dan Saultman
Detroit
Art Pottery, Graphic and Website Design
http://www.saultman.com=
Diana Spiller on mon 7 mar 05
> Gene was commenting:
>>I purchased a Paasche air brush some time back and decided to give it =
a
>>try the other day. But the tip keeps clogging.
Hi,
I am one of the folks who "lurks" and reads and learns. I took an =
excellent course in airbrushing at Canadore College, North Bay, Ontario =
two years ago. =20
I use the Paasche VLS (double action). I had watched the video that =
comes with it, but no matter how much I practiced, I could not get the =
results I wanted. In the class I learned proper technique hands-on (and =
a few neat tricks). However, the most important thing I learned was to =
dismantle and thoroughly clean the airbrush after every use, sometimes =
oftener. That made a huge difference. Also, I remove the red plastic =
housing while working. When I was first told to do that I thought that =
has got to be uncomfortable, but once I got used to it, I wouldn't use =
it any other way. Doing that also makes it easy to do a quick flush =
while working, which will often clear a minor clog. Also, a damaged =
brass tip can cause trouble and it can be difficult to see, so I keep a =
few extras on hand. =20
I am not doing "fine detail" artwork with the airbrush, just special =
effects. I do mostly Mason stain (with a little frit) and water. Use a =
#3 or #5 tip. I use about 20-25# psi with just a regular Home Depot =
shop compressor that I got on sale. Use ear protection if you don't =
have a quiet model. Because I don't yet have a spray booth, I do it =
outside on nice days only.
If I am occasionally doing glaze then I use a spray gun and cannister, =
and higher pressure.
Diana Spiller
Sunday Pilot Pottery
Ashby, Massachusetts
Peggy Bjerkan on mon 7 mar 05
I find that it helps to add CMC (liquid gum solution) to thin glaze mixtures
to aid in suspension. Otherwise, all the solids immediately settle to the
bottom of the cup or bottle and plug up the intake openings.
Good luck,
Peggy Bjerkan in sunny St. Helena, Ca.
peggy@maskwoman.com
www.maskwoman.com
----- Original Message -----
From: "Gene Arnold"
To:
Sent: Sunday, March 06, 2005 6:35 AM
Subject: air brush users
I purchased a Pasche air brush some time back and decided to give it a try
the other day. But the tip keeps clogging.
I thinned the glaze to the consistence of something like skim milk.
I sieved the glaze with an 80 mesh sieve but it still gets all clogged up.
What is the best tip size to use for glaze spraying??
What is the best mesh sieve to use??
What air pressure is the best??
How thin should the glaze be??
Any other tips or hints would be appreciated!!
Thanks!!
Gene & Latonna
mudduck@mudduckpottery.com
www.mudduckpottery.com
______________________________________________________________________________
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.
| |
|
