mel jacobson on tue 13 jul 99
just a helpful hint.
i keep about a quart of liquid bentonite on hand
to add to glazes.
most of you know how hard it is to get bentonite to go
into solution in a glaze....glogs things up...or you have to
tumble it in dry very well.
well, anyway....i mix water and bentonite in an old blender
and store the liquid in a quart plastic container with a tight
cover. it turns into a jell after about a week.
i add about a tablespoon to a 5 gallon bucket of glaze
and it will keep most in suspension.
(i realize that it is almost impossible to get a perfect dry
percentage, but hell, most glazes just call for a pinch.)
mel.mn
http://www.pclink.com/melpots
from minnetonka, minnesota, u.s.a.
pearcelr@island.net on fri 16 jul 99
<4.1.19990713032034.0092592-@pclink.com> wrote:
original article:http://www.egroups.com/group/clayart/?start=47884
> ----------------------------Original message-------------------------
---
> just a helpful hint.
>
> i keep about a quart of liquid bentonite on hand
> to add to glazes.
>
> most of you know how hard it is to get bentonite to go
> into solution in a glaze....glogs things up...or you have to
> tumble it in dry very well.
> well, anyway....i mix water and bentonite in an old blender
> and store the liquid in a quart plastic container with a tight
> cover. it turns into a jell after about a week.
>
> i add about a tablespoon to a 5 gallon bucket of glaze
> and it will keep most in suspension.
>
> (i realize that it is almost impossible to get a perfect dry
> percentage, but hell, most glazes just call for a pinch.)
>
> mel.mn
>
> http://www.pclink.com/melpots
> from minnetonka, minnesota, u.s.a.
>
Dear Mel:
Reads like a good idea, but how much bentonite to how much water in the
blender?
TIA for the very useful idea!
Gabrielle Madsen
pearcelr@island.net
>
mel jacobson on sat 17 jul 99
start with water...then add as much bentonite as you can stand.
anyway....no perfect amount.
experiment...and let us know.
i dumped in a cub of b and filled the blender with water.
mixed like mad.
dumped into a 1 qt plastic container with a tight lid.
turned to jello.
\mel
http://www.pclink.com/melpots
from minnetonka, minnesota, u.s.a.
Tom Wirt on sun 18 jul 99
Subject: bentonite
> ----------------------------Original message----------------------------
> i dumped in a cub of b and filled the blender with water.
> mixed like mad.
> dumped into a 1 qt plastic container with a tight lid.
> turned to jello.
> \mel
Well....I know where I'm NOT going for margaritas!!!
Tom
Dave Sexton on tue 9 sep 03
A question about adding bentonite to glazes and slips. I have checked several
authorities and find conflicting advice. One says be sure to dry mix the
bentonite with the other dry materials before adding water or you may have
problems. Another says always mix the bentonite in a slurry before adding to
to the glaze or you may have problems. A third says try to avoid bentonite
altogether so you don't have any problems. Who's right? Or does it really
matter?
Darnie Sizemore on tue 9 sep 03
Dave,
I have use bentonite for about 6-7 years. I have always found that if I mixed it into the dry ingredients, and then gave that a good mix, before I added water, I had no problems. However if I added bentonite to the into a water, it made an awful goopie mess that would not screen properly.
I have found that bentonite is a very useful suspending agent, however I know that in some glazes it can affect the look of the glaze.
I hope that this helps! Good Luck!!
Darnie
Dave Sexton wrote:
A question about adding bentonite to glazes and slips. I have checked several
authorities and find conflicting advice. One says be sure to dry mix the
bentonite with the other dry materials before adding water or you may have
problems. Another says always mix the bentonite in a slurry before adding to
to the glaze or you may have problems. A third says try to avoid bentonite
altogether so you don't have any problems. Who's right? Or does it really
matter?
______________________________________________________________________________
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
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Louis Katz on tue 9 sep 03
I dry mix it lightly and do not have a problem.
Louis
On Monday, September 8, 2003, at 08:33 PM, Dave Sexton wrote:
> A question about adding bentonite to glazes and slips. I have checked
> several
> authorities and find conflicting advice. One says be sure to dry mix
> the
> bentonite with the other dry materials before adding water or you may
> have
> problems. Another says always mix the bentonite in a slurry before
> adding to
> to the glaze or you may have problems. A third says try to avoid
> bentonite
> altogether so you don't have any problems. Who's right? Or does it
> really
> matter?
>
> _______________________________________________________________________
> _______
> 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.
>
Marcia Selsor on tue 9 sep 03
They all are.
1. dry mixing will help avaoid big lumps as it can expand to 1500 times
its size when added to water.
2. this also helps avoid the lumping when it is in the batch mix.
3. If you don't like dealing with these problems..avoid it altogether.
This is what clay is about. There are always many corrent resolutions to
problems.-or personal ways to avoid the problems.
Best wishes,
Marcia
Dave Sexton wrote:
> A question about adding bentonite to glazes and slips. I have checked several
> authorities and find conflicting advice. One says be sure to dry mix the
> bentonite with the other dry materials before adding water or you may have
> problems. Another says always mix the bentonite in a slurry before adding to
> to the glaze or you may have problems. A third says try to avoid bentonite
> altogether so you don't have any problems. Who's right? Or does it really
> matter?
>
> ______________________________________________________________________________
> 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.
>
--
Tuscany 2004
http://home.bresnan.net/~m.selsor/Tuscany2004.html
Snail Scott on tue 9 sep 03
At 01:33 AM 9/9/03 +0000, you wrote:
>...One says be sure to dry mix the
>bentonite with the other dry materials before adding water or you may have
>problems. Another says always mix the bentonite in a slurry before adding to
>to the glaze or you may have problems. A third says try to avoid bentonite
>altogether so you don't have any problems. Who's right?
These pieces of advice are actually similar. If you
put dry bentonite in your glaze and add water without
premixing, you get a slimy immiscible glob. By dry-
mixing the materials, the bentonite is distributed
evenly throughout, so no glob. By pre-wetting the
bentonite as a slurry, you also prevent the glob.
Two methods, one outcome. Both right. Eliminating
bentonite altogether would also prevent The Glob,
but that seems a bit extreme; bentonite is useful
stuff.
-Snail
Marcia Selsor on tue 9 sep 03
They all are.
1. dry mixing will help avaoid big lumps as it can expand to 1500 times
its size when added to water.
2. this also helps avoid the lumping when it is in the batch mix.
3. If you don't like dealing with these problems..avoid it altogether.
This is what clay is about. There are always many corrent resolutions to
problems.-or personal ways to avoid the problems.
Best wishes,
Marcia
--
Tuscany 2004
http://home.bresnan.net/~m.selsor/Tuscany2004.html
Tony Hansen on tue 9 sep 03
Check this page:
http://www.digitalfire.ab.ca/cermat/ceramicmaterials/material.php?id=106
Bentonite is likely only needed if your glaze is settling or
dries too powdery. Try mixing a typical bentonite powder
into a slurry without a super high speed mixer and you
will find out why that will not work. Try it with 10
grams of powder, it is worth it to see. Bentonites
normally have to be shaken together with another powder
to separate the particles so they do not agglomerate.
-------8<--------
A question about adding bentonite to glazes and slips. I have checked several
authorities and find conflicting advice. One says be sure to dry mix the
bentonite with the other dry materials before adding water or you may have
problems. Another says always mix the bentonite in a slurry before adding to
to the glaze or you may have problems. A third says try to avoid bentonite
altogether so you don\'t have any problems. Who\'s right? Or does it really
matter?
______________________________________________________________________________
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.
--------
Tony Hansen, Digitalfire Corp.
Les Haworth on wed 10 sep 03
Hello Leonard,
You are correct. I am a firm believer in testing and I've done my own
testing here at Laguna. I took 8 oz of hot water added 20 g. of bentonite
hpm-20 then mixed in a milk shake blender for 1 min. Then took 8 oz of cold
water and added 20 g. of bentonite hpm-20 mixed in a milk shake blender for
1 min. I let both of these slake in my office overnight. Next day, no
difference... bentonite was not clumpy just nice and slick and oil like.
Temperature matters if you want to mix fast, but if you can wait overnight
there is no notable difference. My conclusion is: Mix bentonite in your
glaze water, let it sit overnight, and remix in the morning and then add
your dry glaze ingredients. And before you ask, the answer is yes I drank
both of the test samples. But not on the same day.
Lester R. Haworth III
Sales and Technical Support
Laguna Clay Co.
14400 Lomitas ave
City of Industry, CA 91746
(626)330-0631 ext. 229
les@lagunaclay.com
www.lagunaclay.com
"I never collaborated with him or anyone else, ever. I mean, you don't
collaborate on your art with somebody. That's your own personal and only
thing that you have that's yours, period." ~ Peter Voulkos
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG]On Behalf Of Leonard
Smith
Sent: Tuesday, September 09, 2003 8:00 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: Bentonite
> These pieces of advice are actually similar. If you
> put dry bentonite in your glaze and add water without
> premixing, you get a slimy immiscible glob. By dry-
> mixing the materials, the bentonite is distributed
> evenly throughout, so no glob. By pre-wetting the
> bentonite as a slurry, you also prevent the glob.
> Two methods, one outcome. Both right. Eliminating
> bentonite altogether would also prevent The Glob,
> but that seems a bit extreme; bentonite is useful
> stuff.
>
In general, dry mixing works well, through I have never tried mixing it
into water first I have been told it helps if the water is hot. I have
found that when I need to add bentonite to a glaze after it has been
mixed in water if I sprinkle it on top and allow 24 hours for it to
slake it mixes into the glaze slip without any lumps.
Bentonite is a wonderful clay material and very beneficial to both
suspension, adhesion and to the durability of the unfired surface.
There are many glaze effects that I could not have achieved without it
when I was raw glazing. If you have a need for it use it but don't take
the advice to avoid it.
Leonard Smith
Rosedale Street Gallery
2A Rosedale Street
Dulwich Hill NSW 2203
Australia
____________________________________________________________________________
__
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melpots@pclink.com.
Leonard Smith on wed 10 sep 03
> These pieces of advice are actually similar. If you
> put dry bentonite in your glaze and add water without
> premixing, you get a slimy immiscible glob. By dry-
> mixing the materials, the bentonite is distributed
> evenly throughout, so no glob. By pre-wetting the
> bentonite as a slurry, you also prevent the glob.
> Two methods, one outcome. Both right. Eliminating
> bentonite altogether would also prevent The Glob,
> but that seems a bit extreme; bentonite is useful
> stuff.
>
In general, dry mixing works well, through I have never tried mixing it
into water first I have been told it helps if the water is hot. I have
found that when I need to add bentonite to a glaze after it has been
mixed in water if I sprinkle it on top and allow 24 hours for it to
slake it mixes into the glaze slip without any lumps.
Bentonite is a wonderful clay material and very beneficial to both
suspension, adhesion and to the durability of the unfired surface.
There are many glaze effects that I could not have achieved without it
when I was raw glazing. If you have a need for it use it but don't take
the advice to avoid it.
Leonard Smith
Rosedale Street Gallery
2A Rosedale Street
Dulwich Hill NSW 2203
Australia
David Hendley on thu 22 jan 04
Bentonite is used for all kinds of things.
Most of it, in Texas anyway, is used when drilling oil wells.
It is used to "seal" ponds and lakes, so the water doesn't
seep through the dam.
It is also used in many foods and medicines.
Last week I discovered, at the home-brew supply store, that
it is also used in wine-making.
David Hendley
david@farmpots.com
http://www.farmpots.com
Lee Love on fri 23 jan 04
When I worked at the physical plant during college, I was the roofer's
assistant for a time. He was an oldtimer oil rigger. I was with
him when he tried an experiment on a flat roof that he was having
trouble keeping from leaking. We had done all sorts of taring and
flashing that didn't work. We mixed up a poured a slurry of
bentonite on the offending area. It stopped the leak! It was a
temporary fix. I think the roof was due to be redone the next year.
Lee in Mashiko http://mashiko.us
Web Log (click on recent date):
http://www.livejournal.com/users/togeika/calendar
Allison's Ox-Bo Farm & Ranch on fri 23 jan 04
To answer MillaMM2000@aol.com question about what could a truck load of =
large bags of Bentonite be used for......Bentonite is used in drilling =
mud. Baroid Corp., a Dresser Industries, Inc. Company, now a =
Halliburton acquisition owns large reserves of Bentonite.
Pat Allison ox-bo@lcc.net=20
Ox-Bo Farm & Ranch
Evergreen, Texas=20
Tony Hansen on fri 23 jan 04
I thought it was used to suspend powders of
high specific gravity like Barite to create
slurries that will buoy up the rock chips
as they are cut by the bit.
-------8<--------
Dear Milla;
Bentonite is used in drilling operations to lubricate the cutting bit.
It is also used to line ponds to create an impermeable layer on the
bottom to prevent seepage.
-------
===============
Tony Hansen, http://digitalfire.com
Personal Contact Page: http://digitalfire.com/services/contact.php
Calculation/Database Software for Ceramic Industry
John Britt on sat 24 jan 04
David,
It is also my understanding the it is used to make weapons grade anthrax.
It fine particle size allows the anthrax to go airborne.
John Britt
Tony Ferguson on sat 24 jan 04
It is also used to plug holes in large industrial tanks.
Thank you.
Tony Ferguson
On Lake Superior, where the sky meets the Lake
Custom & Manufactured Kiln Design
Stoneware, Porcelain, Raku and more
by Coleman, Ferguson, Winchester...
http://www.aquariusartgallery.com
218-727-6339
315 N. Lake Ave
Apt 312
Duluth, MN 55806
----- Original Message -----
From: "Allison's Ox-Bo Farm & Ranch"
To:
Sent: Friday, January 23, 2004 9:48 AM
Subject: BENTONITE
To answer MillaMM2000@aol.com question about what could a truck load of
large bags of Bentonite be used for......Bentonite is used in drilling mud.
Baroid Corp., a Dresser Industries, Inc. Company, now a Halliburton
acquisition owns large reserves of Bentonite.
Pat Allison ox-bo@lcc.net
Ox-Bo Farm & Ranch
Evergreen, Texas
____________________________________________________________________________
__
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
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melpots@pclink.com.
Lili Krakowski on sun 19 sep 10
Verna writes:
".Do you always add BENTONITE to all the Laguna glazes????
I guess this sounds like a dumb question but then why does it just not =3D
come
already in the glaze?????"
I have no idea. I rarely use commercial glazes, like just this side of =3D
never--and never have used for anything but bright red in small =3D
quantities.
My guess is that Laguna uses one of several commercial products that =3D
work like Bentonite. Further guess is that maybe for spraying, or some =3D
other method of application Bentonite would be a no-no. Further guess =3D
is that if these glazes are sold dry, Bentonite already in them might =3D
be a problem in rehydration.
However...I have and do use bentonite instead of another clay in glazes =3D
that contain little clay. I find this works extremely well. I just =3D
calculate the Bentonite in at calculation time.
Lili Krakowski
Be of good courage
Lili Krakowski on sun 19 sep 10
Verna writes:
"
Lili Krakowski
Be of good courage
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