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spraying glaze

updated sat 13 oct 07

 

mel jacobson on sun 22 oct 06


maurice is very, very correct.
the nozzle size and density
of the tip is critical for glaze spraying.

that is why we suggest a `sand blasting`
gun/sprayer for itc. the tip will last forever, and it is big.

the glaze materials will eat most guns
up in no time flat.
it is like running sand paper through them.

a small, un/hardened nozzle will just be a pain
in the butt for glaze. remember, glaze is not paint.

even if you sieve up in the 100 range...it
will give you problems.

i know, many of you use a small gun, sieve high.
it works for some...like all posts on clayart...
it will work for someone, with their application.

in general, cheap tools, made too small for the
application will be a pain. never worth the time
or money spent on them.

like i often say: `if you spray one pot a month, or
six a year...well, there you have it. the sprayer will
last for a 100 years. if you are doing a great many
pots a day...get good tools.` it pays.

if the gun is good, works great, and the cup
is cracked...i would duct tape the cup and
give it a layer of epoxy.
remake the cup. and then wait for the new cup to
arrive...

i love my little `critter` sprayer. i have/use a dozen
acrylic paint bottles...just screw them in the bottom
of the gun. same size. just keep the glaze in the bottle,
put the cover back on. you should all see larron lerdahl at
hay creek...he has dozens of bottles of glaze, just screws
them into a `critter` and sprays layer upon layer of glaze.
great pots. he is a spray/tape machine.
mel

from: mel/minnetonka.mn.usa
website: http://www.visi.com/~melpots/

Clayart page link: http://www.visi.com/~melpots/clayart.html

Smith, Judy on thu 11 oct 07


I finally got my Paasche L sprayer and my compressor. I have several
pots that I want to test glazing. My question is...How thin do I make
the glazes that I will be spraying?

=20

Thanks,

Judy Smith

Nashville, TN

Dannon Rhudy on thu 11 oct 07


........I finally got my Paasche L sprayer and my compressor. ......
My question is...How thin do I make
the glazes that I will be spraying?...........

You will have to test a bit. The glazes must be
thin enough, and FINE enough, to pass through
the tip on the sprayer. You'll have to discover
that by trial and error.

regards

Dannon Rhudy

Mark Issenberg on thu 11 oct 07


Also when spraying I use two screens a 40 mesh then a 80 mesh before
spraying.. I also spray using 40 lbs

Mark



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Sam or Mary Yancy on fri 12 oct 07


Judy - The Glaze should be about milk consistancy and MUST be strained though a paint strainer or screen - else you WILL clog the sray gun. , Glaze is a gritty substance which need to be thin when spraying. As you spray more and over time, the passage of the glaze through the spraygun will naturally wear the internal passages of the spray gun and you can make the glaze thicher if you want to. I prefer thin coats (several) over using a thick glaze and I think you get a better finish. Wet the part, let it dry a bit, spray (don't "dust") a coat on and wait a bit - then do another coat - or a few to make the glaze the thichness desired. Perhaps try a spray on anything but put a piece of tape in it. then pull the tape to check the glaze thickness (about 1/32 inch?) . The experts can tell how thick to spray. I spray about 5 thin coats myself. Good luck. Sam in Daly City P.S> KEEP YOUR SPRAY GUN CLEAN!!!

"Smith, Judy" wrote: I finally got my Paasche L sprayer and my compressor. I have several
pots that I want to test glazing. My question is...How thin do I make
the glazes that I will be spraying?



Thanks,

Judy Smith

Nashville, TN

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Daniel Sommerfeld on fri 12 oct 07


Judy,

On the other hand you do not want it so thin that the glaze runs and/or
saturates the pot with water.

Dan S.

www.byhand.us