Linda Rose on wed 26 sep 07
Hi, All!
This is my first visit to the wonderful world of ClayArt and I have a
problem that I am hoping to find solution to through any of you experts!
I recently fired a favored piece that I had brushed coated with a
commercial matte clear ^5 glaze. It came out very milky and not very
appealing to my eye (you all know about what happens when one has
expectations). Thinking it underfired, I refired to a slightly higher
temperature. Well, the results were an (even less satisfying) extremely
glossy surface! I really want to salvage this piece of sculpture as much
to my satisfaction as possible, and am looking for advice on what I might
apply to the piece at this point (cold finish if possible) to minimize,
mute or otherwise overcome the glossy look. Matte would be the preferred
result. So, is there a technique, product, material, etc. that might hel=
p
me out here? I have used acrylic in the past when dissatisfied with a
color, but am not real thrilled with the opaque result. Is there any
other solution out there?
Dannon Rhudy on thu 27 sep 07
Sand blast it, if you have the facilities to do
so. If you're careful, you can remove the shine
without taking off all the glaze.
Or, you could etch it with commercial
etching compound available at hobby stores.
Your best bet is probably to make another
and use this experience to alter the surface
in a way that pleases you better.
regards
Dannon Rhudy
Dolita Dohrman on thu 27 sep 07
This may sound a little drastic but is there any way you can sand
blast it? I did it on a number of pieces on which the glaze came out
too bright and glossy and was very pleased with the results. It can
take awhile though. You obviously like the piece and probably spent
a lot of time on it. I would be concerned with adding more glaze and
refiring given you might came out with even worse results.
Dolita
On Sep 27, 2007, at 12:59 AM, Linda Rose wrote:
> Hi, All!
>
> This is my first visit to the wonderful world of ClayArt and I have a
> problem that I am hoping to find solution to through any of you
> experts!
>
> I recently fired a favored piece that I had brushed coated with a
> commercial matte clear ^5 glaze. It came out very milky and not very
> appealing to my eye (you all know about what happens when one has
> expectations). Thinking it underfired, I refired to a slightly higher
> temperature. Well, the results were an (even less satisfying)
> extremely
> glossy surface! I really want to salvage this piece of sculpture
> as much
> to my satisfaction as possible, and am looking for advice on what I
> might
> apply to the piece at this point (cold finish if possible) to
> minimize,
> mute or otherwise overcome the glossy look. Matte would be the
> preferred
> result. So, is there a technique, product, material, etc. that
> might help
> me out here? I have used acrylic in the past when dissatisfied with a
> color, but am not real thrilled with the opaque result. Is there any
> other solution out there?
>
> ______________________________________________________________________
> ________
> 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
> melpots2@visi.com
Linda C Rose on thu 27 sep 07
Thanks for your reply. I don't really have the facilities for sand
blasting, and wouldn't know how to do it if I did. You are probably right
about doing another one.........
Linda
----- Original Message -----
From: "Dannon Rhudy"
To:
Sent: Thursday, September 27, 2007 7:10 AM
Subject: Re: Fixing Glossy Glaze Surface
> Sand blast it, if you have the facilities to do
> so. If you're careful, you can remove the shine
> without taking off all the glaze.
>
> Or, you could etch it with commercial
> etching compound available at hobby stores.
>
> Your best bet is probably to make another
> and use this experience to alter the surface
> in a way that pleases you better.
>
> regards
>
> Dannon Rhudy
>
> ______________________________________________________________________________
> 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
> melpots2@visi.com
>
Linda C Rose on thu 27 sep 07
Thanks for your reply. I don't really have an area to sand blast it and
don't even know what is needed to do that. Sounds like an involved process.
I would be interested in hearing about what is needed and involved in the
sand blasing process. I don't really want to reglaze or refire and was
looking more for a cold finish process that might work.
Linda
----- Original Message -----
From: "Dolita Dohrman"
To:
Sent: Thursday, September 27, 2007 6:15 AM
Subject: Re: Fixing Glossy Glaze Surface
> This may sound a little drastic but is there any way you can sand
> blast it? I did it on a number of pieces on which the glaze came out
> too bright and glossy and was very pleased with the results. It can
> take awhile though. You obviously like the piece and probably spent
> a lot of time on it. I would be concerned with adding more glaze and
> refiring given you might came out with even worse results.
> Dolita
>
> On Sep 27, 2007, at 12:59 AM, Linda Rose wrote:
>
>> Hi, All!
>>
>> This is my first visit to the wonderful world of ClayArt and I have a
>> problem that I am hoping to find solution to through any of you
>> experts!
>>
>> I recently fired a favored piece that I had brushed coated with a
>> commercial matte clear ^5 glaze. It came out very milky and not very
>> appealing to my eye (you all know about what happens when one has
>> expectations). Thinking it underfired, I refired to a slightly higher
>> temperature. Well, the results were an (even less satisfying)
>> extremely
>> glossy surface! I really want to salvage this piece of sculpture
>> as much
>> to my satisfaction as possible, and am looking for advice on what I
>> might
>> apply to the piece at this point (cold finish if possible) to
>> minimize,
>> mute or otherwise overcome the glossy look. Matte would be the
>> preferred
>> result. So, is there a technique, product, material, etc. that
>> might help
>> me out here? I have used acrylic in the past when dissatisfied with a
>> color, but am not real thrilled with the opaque result. Is there any
>> other solution out there?
>>
>> ______________________________________________________________________
>> ________
>> 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
>> melpots2@visi.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
> melpots2@visi.com
>
John Sankey on thu 27 sep 07
"I recently fired a favored piece that I had brushed coated with
a commercial matte clear ^5 glaze. It came out very milky..."
Welcome to the wonderful world of commercial glazes :-(
I had the same problem - see
http://sankey.ws/glazetest.html
at the bottom. As I also note there, everything I tried to reduce
the gloss of cone 6 gloss glazes failed. 'Sand blasting' is your
only hope, but you can't use commercial 'sand', it will make the
surface look just like ground glass, not matte, and then the
piece is done for. Try blasting with rottenstone, which is much
softer than silica and might give the result you want. If it
doesn't cut the surface at all, use the finest grit you can
obtain - silicon carbide is available at 1000 grit.
But be forewarned: I ended up by throwing my vase out, and made
others. As others have said, don't let pieces get too precious.
Good luck, and don't give up!
John
--
Include 'Byrd' in the subject line of your reply
to get through my spam filter.
Bunny Lemak on thu 27 sep 07
There is a 'cold' way of changing the glossy glaze to a matte, but be
forewarned that it will turn your piece into a non-fuctional piece now.
Companies like Duncan, Mayco & Gare (just to name a few off the top of my
head) have sprays that do this.
There are several sprays made, usually for acrylic paints, but you can use
them over a gloss surface. The spray you are looking for is either their
matte or porcelian spray.
If you do decide to spray this over your piece, and do not like the
results, you can easily pop the piece back into the kiln and re-fire to
cone 06 and the spray will come off (in case of over spraying or just not
the effect you are looking for).
This would be the most cost effecient way of getting what you are
hopefully looking for without going the sand-blasting route.
Good luck!
Bunny
in AZ - OMG!! the doors and window are open (finally) and we are not
melting to death!!!! Yippee! :0)
Judy Nelson-Moore on fri 28 sep 07
I have found that by refiring a stoneware glaze to cone 06 it will often
make it matt...no reglazing...just stick it back in and fire as is. Of
course, this assumes that you like the color of the original, which may not
change too much.
Judy Nelson-Moore
On Thu, 27 Sep 2007 12:21:47 -0500, Bunny Lemak wrote:
>
>If you do decide to spray this over your piece, and do not like the
>results, you can easily pop the piece back into the kiln and re-fire to
>cone 06 and the spray will come off (in case of over spraying or just not
>the effect you are looking for).
>
Snail Scott on fri 28 sep 07
Date: Wed, 26 Sep 2007 22:59:58 -0600
From: Linda Rose
>...matte clear ^5 glaze...came out very milky...Thinking it underfired, I refired to a slightly higher
temperature. Well, the results were...extremely
glossy surface! I...am looking for advice...to minimize,
mute or otherwise overcome the glossy look...
I often sandblast my surfaces. This can be tricky on
convoluted forms, though, and if the glaze layer is
thin, care must be taken not to break through that
layer to the clay underneath, since it will blast away
much faster than most glazes and leave pitted divots.
(Of course, that may be what you're after, sometime.)
Glass-etching solutions like 'Armor-Etch' give a smoother
and easier-to-control dulling than sandblasting. Carbide
sandpaper can also scar and roughen a surface, but all
these things will give a chalky look, which is what you
were tying to avoid to begin with, I recall.
The etching solutions have the advantage of being of
minimal impact on the glaze thickness, so I'd give it a
try, and if it doesn't work out, you can always go with
my preference...
Plan B:
Many glazes which are glossy in a normal (i.e. fast-cooling)
elecric firing will go matte if cooled slowly enough.
One way to achieve this effect is to re-fire the piece
to a low temperature, say, ^08 or so. Some glazes will more
readily go matte with this treatment than others, and a
nice long soak can really increase the mattteness. If it's
capable of becoming a microcrystalline ('true') matte at
all, this will generally do the trick.
Remember that some glazes, even 'domesticated' and
well-behaved commercial ones, will change color radically
if they become microcrystalline! (A classic example:
dark blue becoming pale lavender.) If you really hate the
present look, though, maybe there's nothing to lose, and
if you decide you'd rather have the glossy look back,
refiring to the original cone and crash-cooling will
generally bring back the shine.
-Snail
Ron Roy on sat 29 sep 07
Hi Linda,
Someone suggested refiring to cone 06 - this would be the same as slow
cooling - giving crystals a chance to develop and turn your glaze matte.
Just fire it up to say 08 - hold for an hour and then cool it slow rather
than fast - I'm pretty sure you can get what you want - just a matter of
cooling it slow enough.
RR
>Hi, All!
>
>This is my first visit to the wonderful world of ClayArt and I have a
>problem that I am hoping to find solution to through any of you experts!
>
>I recently fired a favored piece that I had brushed coated with a
>commercial matte clear ^5 glaze. It came out very milky and not very
>appealing to my eye (you all know about what happens when one has
>expectations). Thinking it underfired, I refired to a slightly higher
>temperature. Well, the results were an (even less satisfying) extremely
>glossy surface! I really want to salvage this piece of sculpture as much
>to my satisfaction as possible, and am looking for advice on what I might
>apply to the piece at this point (cold finish if possible) to minimize,
>mute or otherwise overcome the glossy look. Matte would be the preferred
>result. So, is there a technique, product, material, etc. that might help
>me out here? I have used acrylic in the past when dissatisfied with a
>color, but am not real thrilled with the opaque result. Is there any
>other solution out there?
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Eleanora Eden on sat 13 oct 07
Hi Linda,
I didn't see any follow-up on Dannon's suggestion about etching cream
which I think is a totally inspired idea.
I have used it on glass and it works really well and very easy to apply.
When compared to the idea of sand-blasting there is no contest as to
how easily you could get hold of it and get some nice results.
Eleanora
Or, you could etch it with commercial
etching compound available at hobby stores.
>Thanks for your reply. I don't really have an area to sand blast it and
>don't even know what is needed to do that. Sounds like an involved process.
>I would be interested in hearing about what is needed and involved in the
>sand blasing process. I don't really want to reglaze or refire and was
>looking more for a cold finish process that might work.
>
>Linda
--
Bellows Falls Vermont
www.eleanoraeden.com
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