boobyagga@juno.com on mon 16 jan 06
not sure but i think i found something out for myself that excites me to=
no end. i will have to do some testing...but i wanna see what the forum=
has to say about it too.
ive been playing with vinegar for the past few days and made a terra sig=
cobalt slip out of it. i use the slip solution in my throwing slip buck=
et and just let it settle out for a few days. im not that interested in =
getting the insano small particles...so i didnt add a defloc agent. i ad=
ded vinegar and hydrogen peroxide to the batch as a flocculant (planning=
on doing some thick slip trailing on mostly dry pots)....siphoned off t=
he top added cobalt and had my new stuff. =
however i went to throw a 3 section pot tonight and was too lazy to go g=
et new water. turns out the vinegar slip solution is amazing. when hydr=
ogen peroxide and vinegar are added they bubble. its how you made volcan=
oes as a little kid. well those bubbles stay in that slip solution for a=
very long time. the slip i used to throw with tonight was extremely air=
y...so it seemed to sit on the pot...never sinking in. and it didnt comp=
romise the friction at all. =
im thinking maybe the super tiny air bubles in the mix held the surface =
tension as well as being flocculated and made it so that the slip didnt =
sink into the pot. usually on a pot this tall my fingers begin to stick =
3/4 of the way up from the slip sinking in and joining with the clay. no=
ne of that happened tonight and the clay never seemed to get softer. i e=
ven went as far as to leave a puddle in the bottom of the pot for a good=
20 minutes....with no discernable change in the moisture level of the b=
ottom. usually i would worry about an S crack with such a long soak time=
down there. =
i really dont know if i have something here or not...but i will most def=
initely be testing it the next few days and figgure out some stuff. toni=
ghts throwing was just picture perfect and the slip felt like it was doi=
ng more than it should. =
someone please tell me im right...because that would be really cool.
jason palmer
Elizabeth Priddy on mon 16 jan 06
How do your hand feel after being in contact with that
much acid for a whole evening?
E
"boobyagga@juno.com" wrote:
not sure but i think i found something out for myself that excites me to no end. i will have to do some testing...but i wanna see what the forum has to say about it too.
ive been playing with vinegar for the past few days and made a terra sig cobalt slip out of it. i use the slip solution in my throwing slip bucket and just let it settle out for a few days. im not that interested in getting the insano small particles...so i didnt add a defloc agent. i added vinegar and hydrogen peroxide to the batch as a flocculant (planning on doing some thick slip trailing on mostly dry pots)....siphoned off the top added cobalt and had my new stuff.
however i went to throw a 3 section pot tonight and was too lazy to go get new water. turns out the vinegar slip solution is amazing. when hydrogen peroxide and vinegar are added they bubble. its how you made volcanoes as a little kid. well those bubbles stay in that slip solution for a very long time. the slip i used to throw with tonight was extremely airy...so it seemed to sit on the pot...never sinking in. and it didnt compromise the friction at all.
im thinking maybe the super tiny air bubles in the mix held the surface tension as well as being flocculated and made it so that the slip didnt sink into the pot. usually on a pot this tall my fingers begin to stick 3/4 of the way up from the slip sinking in and joining with the clay. none of that happened tonight and the clay never seemed to get softer. i even went as far as to leave a puddle in the bottom of the pot for a good 20 minutes....with no discernable change in the moisture level of the bottom. usually i would worry about an S crack with such a long soak time down there.
i really dont know if i have something here or not...but i will most definitely be testing it the next few days and figgure out some stuff. tonights throwing was just picture perfect and the slip felt like it was doing more than it should.
someone please tell me im right...because that would be really cool.
jason palmer
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Elizabeth Priddy
Beaufort, NC - USA
http://www.elizabethpriddy.com
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Gay Judson on sun 22 jan 06
Seems like it was longer ag0 than just last week that Jason wrote
about his "discovery" using the vinegar and hydrogen peroxide slip for
throwing. I have been eagerly watching for some of our more
scientific members to react on that post with an explanation or
caution. Today I put some vinegar into my throwing water. I was
using clay fresh out of the pugmill which is pretty soft. I was very
surprised at how long the clay let me work with it. I got it a lot
thinner than I am usually able to do--so thin (and wet)that finally it
collapsed on me. But I wedged it on the wheel and could throw it
again very successfully--which was very surprising because now it was
really wet.
So my question is: am I harming the integrity of the piece I am making
with the clay using the vinegared water? What affect will it have on
the clay as it dries, is fired, glazed and fired again?
Thanks,
Gay Judson, in San Antonio, TX
> -----Original Message-----
> From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of
> boobyagga@juno.com
> Sent: Monday, January 16, 2006 12:33 AM
> To: CLAYART@LSV.CERAMICS.ORG
> Subject: vinegar and a discovery!
>=20
> not sure but i think i found something out for myself that excites
> me to no end. i will have to do some testing...but i wanna see what
> the forum has to say about it too.
> ive been playing with vinegar for the past few days and made a terra
> sig cobalt slip out of it. i use the slip solution in my throwing
> slip bucket and just let it settle out for a few days. im not that
> interested in getting the insano small particles...so i didnt add a
> defloc agent. i added vinegar and hydrogen peroxide to the batch as
> a flocculant (planning on doing some thick slip trailing on mostly
> dry pots)....siphoned off the top added cobalt and had my new stuff.
> however i went to throw a 3 section pot tonight and was too lazy to
> go get new water. turns out the vinegar slip solution is amazing.
> when hydrogen peroxide and vinegar are added they bubble. its how
> you made volcanoes as a little kid. well those bubbles stay in that
> slip solution for a very long time. the slip i used to throw with
> tonight was extremely airy...so it seemed to sit on the pot...never
> sinking in. and it didnt compromise the friction at all.
> im thinking maybe the super tiny air bubles in the mix held the
> surface tension as well as being flocculated and made it so that the
> slip didnt sink into the pot. usually on a pot this tall my fingers
> begin to stick 3/4 of the way up from the slip sinking in and
> joining with the clay. none of that happened tonight and the clay
> never seemed to get softer. i even went as far as to leave a puddle
> in the bottom of the pot for a good 20 minutes....with no
> discernable change in the moisture level of the bottom. usually i
> would worry about an S crack with such a long soak time down there.
> i really dont know if i have something here or not...but i will most
> definitely be testing it the next few days and figgure out some
> stuff. tonights throwing was just picture perfect and the slip felt
> like it was doing more than it should.
> someone please tell me im right...because that would be really cool.
> jason palmer
>=20
> ____________________________________________________________________
> __________
> Send postings to clayart@lsv.ceramics.org
>=20
> You may look at the archives for the list or change your
> subscription
> settings from http://www.ceramics.org/clayart/
>=20
> Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
Ivor and Olive Lewis on tue 24 jan 06
Dear Gay Judson,=20
Your question can be answered by those who are familiar with the =
chemical nature of dilute acetic acid and the physical nature of plastic =
clay. I think we do not know what happens.
I suspect (and this is just a guess because I have no evidence) vinegar =
is only affecting plastic clay and that it will have no effect once it =
has been burned out of the clay, at least no more than any other organic =
residue that exists in a clay body.
Best regards,
Ivor Lewis.
Redhill,
South Australia.
Bonnie Staffel on mon 30 jan 06
I have used Basic H, a wetting agent, for use in my throwing water.
Seems like the pots grow taller easier using it. This is the material
farmers use to disperse standing water in their fields. Lots of fun to
play with. Doesn't seem to affect the clay or pot in drying and firing.
No odor either.
Bonnie Staffel
http://webpages.charter.net/bstaffel/
DVD Throwing with Coils and Slabs
DVD Beginning Processes
Charter Member Potters Council
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