Jeff Lawrence on fri 11 jun 99
Hello Richard,
You were describing the Gilmore sandblaster. Can you use it to spray a
fairly gritty glaze? Maybe 30 mesh sieved max?
The more I think about it, the more I long for a spray gun that will spray
rough glaze that I haven't sieved all the character out of. The Harbor
Freight job works fine after 80 mesh but gets choked up otherwise.
Thanks in advance,
Jeff
Jeff Lawrence Sun Dagger Design
jml@sundagger.com Rt. 3 Box 220
www.sundagger.com Espanola, NM 87532
vox 505-753-5913 fax 505-753-8074
Richard Aerni on sat 12 jun 99
Hi Jeff,
Yes, you could spray a 30 mesh glaze with this gun. The opening which
controls the amount of glaze being drawn up through the tube and into the
spray nozzle is 1/8 inch wide, and that is the greatest constriction in
the apparatus. So, if it fits through there, it gets sprayed. Think of
it for a moment...it is a sandblaster. That means it was designed to
throw sand at objects...most of which is kind of pebbly and definitely
_not_ 200 mesh! Come to think of it, this would be an added incentive to
get the gun...you can use it to sandblast pots, and other objects, as
well.
A couple of other thoughts about the sprayer that I will piggyback onto
this response...
Penny Hosler tells me that the critter spray gun also has the capacity to
regulate the flow of glaze through the gun...some sort of screw down
gizmo. I'd be curious to hear from you critter users out there if you
use this function, and whether or not it is a snap to increase and
decrease spray amounts as you are spraying.
Also, while I did mention that I sell the Gilmore guns to other potters,
what I neglected to mention is that I generally do it while going and
presenting at workshops...when I talk glazing techniques, the gun is
there to buy (at no profit to me) to folks at the workshops. If I wanted
to go into distribution full time, then I wouldn't have any time to
pot...soooo, if you are interested in ordering one, please call the
company at 1-800-458-0107. Then the packing and shipping is up to them,
not me!
That's about it from here...
Richard Aerni
Bloomfield, NY...kiln building and wondering if it's easier to do in 90
degree heat than in February, when I usually find myself doing it...
Jeff Lawrence wrote:
>
> ----------------------------Original message----------------------------
> Hello Richard,
>
> You were describing the Gilmore sandblaster. Can you use it to spray a
> fairly gritty glaze? Maybe 30 mesh sieved max?
>
> The more I think about it, the more I long for a spray gun that will spray
> rough glaze that I haven't sieved all the character out of. The Harbor
> Freight job works fine after 80 mesh but gets choked up otherwise.
>
> Thanks in advance,
> Jeff
> Jeff Lawrence Sun Dagger Design
> jml@sundagger.com Rt. 3 Box 220
> www.sundagger.com Espanola, NM 87532
> vox 505-753-5913 fax 505-753-8074
George Koller on sat 12 jun 99
Jeff,
For what it might be worth I have noticed a "Air Texture Gun" for
all of $29.99 from Harbor Freight - comes with 5 orifaces. Holds
1-3/4Gal (?!). Nozzles sizes 1.5mm,2.7mm 3.5mm & 3.6mm (=7/16"!).
Item#3166-8ADA.
Should be able to throw gravel? Don't have one, and don't need it yet but
would like to hear if it works with gritty glazes - I see them in my future.
George
Jeff Lawrence wrote:
> ----------------------------Original message----------------------------
> Hello Richard,
>
> You were describing the Gilmore sandblaster. Can you use it to spray a
> fairly gritty glaze? Maybe 30 mesh sieved max?
>
> The more I think about it, the more I long for a spray gun that will spray
> rough glaze that I haven't sieved all the character out of. The Harbor
> Freight job works fine after 80 mesh but gets choked up otherwise.
>
> Thanks in advance,
> Jeff
> Jeff Lawrence Sun Dagger Design
> jml@sundagger.com Rt. 3 Box 220
> www.sundagger.com Espanola, NM 87532
> vox 505-753-5913 fax 505-753-8074
F PARKER on sun 13 jun 99
Sounds like a drywall finish gun. If so, they're made to spray that
"popcorn" texture on ceilings, and rely on a very heavy gloppy material --
the stuff purchased in 5-gal buckets..
Fred
> For what it might be worth I have noticed a "Air Texture Gun" for
> all of $29.99 from Harbor Freight - comes with 5 orifaces. Holds
> 1-3/4Gal (?!). Nozzles sizes 1.5mm,2.7mm 3.5mm & 3.6mm (=7/16"!).
> Item#3166-8ADA.
>
> Should be able to throw gravel? Don't have one, and don't need it yet
but
> would like to hear if it works with gritty glazes - I see them in my
future.
>
>
> George
>
>
>
>
> Jeff Lawrence wrote:
>
> > ----------------------------Original message----------------------------
> > Hello Richard,
> >
> > You were describing the Gilmore sandblaster. Can you use it to spray a
> > fairly gritty glaze? Maybe 30 mesh sieved max?
> >
> > The more I think about it, the more I long for a spray gun that will
spray
> > rough glaze that I haven't sieved all the character out of. The Harbor
> > Freight job works fine after 80 mesh but gets choked up otherwise.
> >
> > Thanks in advance,
> > Jeff
> > Jeff Lawrence Sun Dagger Design
> > jml@sundagger.com Rt. 3 Box 220
> > www.sundagger.com Espanola, NM 87532
> > vox 505-753-5913 fax 505-753-8074
Robert Santerre on thu 17 jun 99
Hi Richard,
I have the Gilmore spray gun. One problem I've encountered with it is that when
attempting to get a thick glaze application I sometimes tend to blow the wet
glaze around on the pot surface leaving thin and thick spots. I'm spraying onto
bisque ware at 20 - 25 psi. Do you have this problem of blowing the glaze
around the pot? How close to the vessel do you hold the nozzle of your spray
gun (I'm between 12-18 inches; if I hold it farther away I get less blowing, but
most of the glaze misses the pot)? What pressures are you spraying at? Do you
spray on multiple coats with drying in between to build up thick applications or
do you get thick applications with single coats by increasing glaze specific
gravity (removing water)?
Looking to refine my technique. Need help.
Thanks, Bob
rfsanterre@iquest.net
///////////////////////////////////////////////////
Richard Aerni wrote:
> ----------------------------Original message----------------------------
> Hi Jeff,
>
> Yes, you could spray a 30 mesh glaze with this gun. The opening which
> controls the amount of glaze being drawn up through the tube and into the
> spray nozzle is 1/8 inch wide, and that is the greatest constriction in
> the apparatus. So, if it fits through there, it gets sprayed. Think of
> it for a moment...it is a sandblaster. That means it was designed to
> throw sand at objects...most of which is kind of pebbly and definitely
> _not_ 200 mesh! Come to think of it, this would be an added incentive to
> get the gun...you can use it to sandblast pots, and other objects, as
> well.
>
> A couple of other thoughts about the sprayer that I will piggyback onto
> this response...
>
> Penny Hosler tells me that the critter spray gun also has the capacity to
> regulate the flow of glaze through the gun...some sort of screw down
> gizmo. I'd be curious to hear from you critter users out there if you
> use this function, and whether or not it is a snap to increase and
> decrease spray amounts as you are spraying.
>
> Also, while I did mention that I sell the Gilmore guns to other potters,
> what I neglected to mention is that I generally do it while going and
> presenting at workshops...when I talk glazing techniques, the gun is
> there to buy (at no profit to me) to folks at the workshops. If I wanted
> to go into distribution full time, then I wouldn't have any time to
> pot...soooo, if you are interested in ordering one, please call the
> company at 1-800-458-0107. Then the packing and shipping is up to them,
> not me!
>
> That's about it from here...
>
> Richard Aerni
> Bloomfield, NY...kiln building and wondering if it's easier to do in 90
> degree heat than in February, when I usually find myself doing it...
>
> Jeff Lawrence wrote:
> >
> > ----------------------------Original message----------------------------
> > Hello Richard,
> >
> > You were describing the Gilmore sandblaster. Can you use it to spray a
> > fairly gritty glaze? Maybe 30 mesh sieved max?
> >
> > The more I think about it, the more I long for a spray gun that will spray
> > rough glaze that I haven't sieved all the character out of. The Harbor
> > Freight job works fine after 80 mesh but gets choked up otherwise.
> >
> > Thanks in advance,
> > Jeff
> > Jeff Lawrence Sun Dagger Design
> > jml@sundagger.com Rt. 3 Box 220
> > www.sundagger.com Espanola, NM 87532
> > vox 505-753-5913 fax 505-753-8074
Richard Aerni on fri 18 jun 99
Hey Bob,
Good to hear from you again! Let me try to answer as many of your
questions as I can...
I spray my glazes right now at 55 psi. I have varied the pressure in the
past, going as low as 20 psi, but find at that pressure I was spitting
more glaze at the pots than spraying. A couple of disclaimers as
well...I am spraying my glazes on bone dry greenware, so there will be
some differences as to the tolerance of the pot to handle the glaze.
Also, I am spraying glazes that tend to "move" on the pot (ash glazes
that run), so there is not the pressure () on me to get and exact even
coat. The running tends to obscure any places where the thickness
varies, in fact the differing thicknesses adds to the variety of effect,
I've found. But, having said this, when I am going to put on a
"traditional" stoneware glaze (ie rutile blue), I find it best to spray
on as much as I can before the wet glaze wants to run, then wait for a
few seconds for it to absorb, then spray on more. With greenware, I've
found if I wait til the first coat is dry before spraying on the second
coat, there is a tendency for the glaze to "bubble" (actually, I think
the clay is actually delaminating underneath and pressing upwards). which
will mar the final effect when fired. So, too much glaze causes me
problems. This is one reason why I haven't messed with copper reds much
since I've started single firing...the best ones I've got work with a
really thick application, which is hard on the greenware. As for proper
glaze thickness, over time and with repeated experimentation, I've found
that the "cratering" of the spray into the wet glaze on the pot helps
tell me when I've got enough glaze on.
I spray glazes on at all different distances...hard to say what is the
right distance. Close up for smaller glaze "track", further away for
wider coverage. Pays to be flexible, at least for me. I don't worry
about losing overspray...to me, the cost of glaze and clay is nothing
compared to the cost of my time and tools.
The thickness of my glazes varies, depending on the glaze, but as a rule
of thumb I mix initially one cup of water to 200 grams of dry glaze. For
glazes that need a heavier application, I generally decant some of the
water off later on til it "feels" right. That's about the best I can
answer that question...sorry. Glazing is where I am "loose" in my
work...throwing is the tight part. Your approach may be different. I
would say, based upon previous postings on this subject, that if you are
looking for a spray tool that gives a very uniform glaze application,
then the HVLP system may work best for you. That's just a guess on my
part as I've never tried it, though.
Fiddle around with this stuff, see how it works, and if you've further
questions, either email me, or give me a call on the phone. It would be
good to talk to you again.
Take care,
Richard Aerni
Bloomfield, NY
716-657-6045
....just finished pounding in the keybrick course in the new kiln...man!
That is some rush standing 7 feet up in the air, on top of a ton of arch
brick, just pounding away, trusting in your handiwork not to give way
beneath you.
Robert Santerre wrote:
>
> ----------------------------Original message----------------------------
> Hi Richard,
>
> I have the Gilmore spray gun. One problem I've encountered with it is that wh
> attempting to get a thick glaze application I sometimes tend to blow the wet
> glaze around on the pot surface leaving thin and thick spots. I'm spraying on
> bisque ware at 20 - 25 psi. Do you have this problem of blowing the glaze
> around the pot? How close to the vessel do you hold the nozzle of your spray
> gun (I'm between 12-18 inches; if I hold it farther away I get less blowing, b
> most of the glaze misses the pot)? What pressures are you spraying at? Do y
> spray on multiple coats with drying in between to build up thick applications
> do you get thick applications with single coats by increasing glaze specific
> gravity (removing water)?
>
> Looking to refine my technique. Need help.
>
> Thanks, Bob
> rfsanterre@iquest.net
>
> ///////////////////////////////////////////////////
>
> Richard Aerni wrote:
>
> > ----------------------------Original message----------------------------
> > Hi Jeff,
> >
> > Yes, you could spray a 30 mesh glaze with this gun. The opening which
> > controls the amount of glaze being drawn up through the tube and into the
> > spray nozzle is 1/8 inch wide, and that is the greatest constriction in
> > the apparatus. So, if it fits through there, it gets sprayed. Think of
> > it for a moment...it is a sandblaster. That means it was designed to
> > throw sand at objects...most of which is kind of pebbly and definitely
> > _not_ 200 mesh! Come to think of it, this would be an added incentive to
> > get the gun...you can use it to sandblast pots, and other objects, as
> > well.
> >
> > A couple of other thoughts about the sprayer that I will piggyback onto
> > this response...
> >
> > Penny Hosler tells me that the critter spray gun also has the capacity to
> > regulate the flow of glaze through the gun...some sort of screw down
> > gizmo. I'd be curious to hear from you critter users out there if you
> > use this function, and whether or not it is a snap to increase and
> > decrease spray amounts as you are spraying.
> >
> > Also, while I did mention that I sell the Gilmore guns to other potters,
> > what I neglected to mention is that I generally do it while going and
> > presenting at workshops...when I talk glazing techniques, the gun is
> > there to buy (at no profit to me) to folks at the workshops. If I wanted
> > to go into distribution full time, then I wouldn't have any time to
> > pot...soooo, if you are interested in ordering one, please call the
> > company at 1-800-458-0107. Then the packing and shipping is up to them,
> > not me!
> >
> > That's about it from here...
> >
> > Richard Aerni
> > Bloomfield, NY...kiln building and wondering if it's easier to do in 90
> > degree heat than in February, when I usually find myself doing it...
> >
> > Jeff Lawrence wrote:
> > >
> > > ----------------------------Original message----------------------------
> > > Hello Richard,
> > >
> > > You were describing the Gilmore sandblaster. Can you use it to spray a
> > > fairly gritty glaze? Maybe 30 mesh sieved max?
> > >
> > > The more I think about it, the more I long for a spray gun that will spray
> > > rough glaze that I haven't sieved all the character out of. The Harbor
> > > Freight job works fine after 80 mesh but gets choked up otherwise.
>
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