sibylle on wed 24 may 00
Hi to all,
some time ago a read in a book about a technic of decoration called "mocha". In
case you don't know it by this name I try to explain.
As far as I understood it means to take a little bit of tobacco, put it in water
and let it soak for some days. Then mixing this broth with colouring oxides or
stains and putting a little drop on a wet coloured slip layer will ramify all
around this drop. It should look like computer pictures one knows from chaos
mathematics. O.k. that is the theory.
In practice when I tried it, the oxides didn't mix well, they didn't do at all
what I expected them to do. There was only a point with so little ramification you
would need a magnifier to see them.
What was wrong? Should I add some glycerine, or something completely different?
Any hint will be helpful.
Sibylle
rg42@BELLSOUTH.NET on thu 25 may 00
Hi Sibylle,
I boil the tobacco to make a strong tea. Set the concoction aside a let
it ferment. This tea is strained and mixed with oxides. Dip your pot in
a clay slip and apply the mocha tea with a brush or squeeze bottle. This
should be a quick operation. If the slip looses much water, the tea
doesn't spread and create the moss like structures.
Sorry I don't have a web site to show you the results. I like a mix of
Iron and Cobalt to make a black that occasionally fringes to blue.
Coffee can be used but I think tobacco is better. Get a plug of Brown
Mule and boil it. Great fun.
Richard Gilbert
Cherryville, NC
Martin A. Arkowitz on fri 26 may 00
--- You wrote:
It worked great over his slip recipe. He says the
secret is to put an acid-based mixture over the alkaline-based slip
--- end of quote ---
could let us know what the hopper slip recipe is???
eleanor arkowitz,hanover, nh
amy parker on fri 26 may 00
At Robin Hopper's workshop, he demonstrated mocha technique using just cider
vinegar and oxides. It worked great over his slip recipe. He says the
secret is to put an acid-based mixture over the alkaline-based slip. We had
good results with this, and it works instantly and smells like salad instead
of tobacco spit.
Amy
amy parker Lithonia, GA
amyp@sd-software.com
Gregory D Lamont on fri 26 may 00
Amy, et al,
I also attended a Robin Hopper workshop where this technique was
demonstrated. Important to note here is that he recommended that the the
cider vinegar should be natural vinegar--that kind that still has the
"mother" in the bottle. This kind can be purchased at health food/natural
food stores. It is much more acidic that the regular grocery store variety
and much better results will be obtained.
Greg
At 08:55 AM 5/26/00 -0400, you wrote:
>At Robin Hopper's workshop, he demonstrated mocha technique using just cider
>vinegar and oxides. It worked great over his slip recipe. He says the
>secret is to put an acid-based mixture over the alkaline-based slip. We had
>good results with this, and it works instantly and smells like salad instead
>of tobacco spit.
>
>Amy
>
>
>
>amy parker Lithonia, GA
>amyp@sd-software.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
>melpots@pclink.com.
E-mail address:
gdlamont@isunet.net
Pottery Web Page:
http://www.ourwebpage.net/greglamont/
Mailing address and Phone:
Greg Lamont
3011 Northwood Drive
Ames, IA 50010-4750
(515) 233-3442
Gregory D Lamont on tue 30 may 00
Amy, et al,
I also attended a Robin Hopper workshop where this technique was
demonstrated. Important to note here is that he recommended that the the
cider vinegar should be natural vinegar--that kind that still has the
"mother" in the bottle. This kind can be purchased at health food/natural
food stores. It is much more acidic that the regular grocery store variety
and much better results will be obtained.
Greg
At 08:55 AM 5/26/00 -0400, you wrote:
>At Robin Hopper's workshop, he demonstrated mocha technique using just cider
>vinegar and oxides. It worked great over his slip recipe. He says the
>secret is to put an acid-based mixture over the alkaline-based slip. We had
>good results with this, and it works instantly and smells like salad instead
>of tobacco spit.
>
>Amy
>
>
>
>amy parker Lithonia, GA
>amyp@sd-software.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
>melpots@pclink.com.
E-mail address:
gdlamont@isunet.net
Pottery Web Page:
http://www.ourwebpage.net/greglamont/
Mailing address and Phone:
Greg Lamont
3011 Northwood Drive
Ames, IA 50010-4750
(515) 233-3442
Gregory D Lamont on tue 30 may 00
At 11:20 PM 5/26/00 -0400, you wrote:
>--- You wrote:
> It worked great over his slip recipe. He says the
>secret is to put an acid-based mixture over the alkaline-based slip
>--- end of quote ---
>could let us know what the hopper slip recipe is???
>
>eleanor arkowitz,hanover, nh
>
>
>______________________________________________________________________________
>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.
Here's the recipe:
Robin Hoppers Basic White Slip
75 Ball clay
10 Kaolin
10 Flint
5 Feldspar
For clays firing at cone 2 or below, increased silica to help prevent
crazing of glazes
40 Ball clay
20 Kaolin
20 Flint
10 Feldspar
10 Frit 3110
Greg
E-mail address:
gdlamont@isunet.net
Pottery Web Page:
http://www.ourwebpage.net/greglamont/
Mailing address and Phone:
Greg Lamont
3011 Northwood Drive
Ames, IA 50010-4750
(515) 233-3442
Earl Brunner on tue 30 may 00
This is what he gave out at a workshop I attended.
Basic White Slip (good any temp)
Ball clay 75
Kaolin 10
Feldspar 5
flint 10
one variation:
add 7.5 red Fe
"Martin A. Arkowitz" wrote:
>
> --- You wrote:
> It worked great over his slip recipe. He says the
> secret is to put an acid-based mixture over the alkaline-based slip
> --- end of quote ---
> could let us know what the hopper slip recipe is???
>
> eleanor arkowitz,hanover, nh
>
>
> ______________________________________________________________________________
> 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.
--
Earl Brunner
http://coyote.accessnv.com/bruec
mailto:bruec@anv.net
amy parker on wed 31 may 00
Greg - True, he did, but I used the el-cheapo from the grocery and it worked
just as good as the expensive kind, which I shall save for salads.
Amy
At 09:41 AM 5/30/00 -0500, you wrote:
>Amy, et al,
>
>I also attended a Robin Hopper workshop where this technique was
>demonstrated. Important to note here is that he recommended that the the
>cider vinegar should be natural vinegar--that kind that still has the
>"mother" in the bottle. This kind can be purchased at health food/natural
>food stores. It is much more acidic that the regular grocery store variety
>and much better results will be obtained.
>Greg
amy parker Lithonia, GA
amyp@sd-software.com
Gregory D Lamont on sat 3 jun 00
At 11:20 PM 5/26/00 -0400, you wrote:
>--- You wrote:
> It worked great over his slip recipe. He says the
>secret is to put an acid-based mixture over the alkaline-based slip
>--- end of quote ---
>could let us know what the hopper slip recipe is???
>
>eleanor arkowitz,hanover, nh
>
>
>______________________________________________________________________________
Hi Eleanor,
My reply apparently never made it to the list the first time I sent it, so
I'm resubmitting it to the list.
Here's the recipe:
Robin Hoppers Basic White Slip
75 Ball clay
10 Kaolin
10 Flint
5 Feldspar
For clays firing at cone 2 or below, increased silica to help prevent
crazing of glazes
40 Ball clay
20 Kaolin
20 Flint
10 Feldspar
10 Frit 3110
Greg
E-mail address:
gdlamont@isunet.net
Pottery Web Page:
http://www.ourwebpage.net/greglamont/
Mailing address and Phone:
Greg Lamont
3011 Northwood Drive
Ames, IA 50010-4750
(515) 233-3442
iandol on mon 5 jun 00
Re: mixing mocha
With all due respect to the information about mixing and making mocha =
patterns given to us by Gregory Lamont and Eleanor Arkowitz, are acid =
and alkaline being used here in the sense of aqueous solutions, just raw =
clays and water. I would not like to get this confused with the notion =
that the slips are acidic or basic in the same way that we treat the =
materials when we write them down as a Seger formula for a glaze.
Do I assume that because the manganese stain is mixed with cider vinegar =
that the slips must have soda or pearl ash included in their formulation =
and if so, how much?
I have seen Robin Hopper do this but could not reproduce the figuring he =
got.
Ivor Lewis. South Australia.
John Lockett on tue 6 jun 00
On Mon 05 Jun, iandol wrote:
> Re: mixing mocha
> Do I assume that because the manganese stain is mixed with cider vinegar that the slip
> s must have soda or pearl ash included in their formulation and if so, how much?
>
> I have seen Robin Hopper do this but could not reproduce the figuring he got.
>
> Ivor Lewis. South Australia.
Try adding some washing up liquid to your slip. Works for me:-)
John
--
John and Ann Lockett - Here in Birmingham UK at
http://www.lockettpots.co.uk
Interested in Ceramics? Visit http://www.ninedud.u-net.com/mpa
Interested in Dogs? Visit http://www.ninedud.u-net.com/bsc
Gregory D Lamont on wed 7 jun 00
Sibylle,
It seems my reply to this never made it to the list. This is probably old
news, but I attended a workshop by Robin Hopper where he demonstrated the
mocha diffusion technique. He recommended using natural vinegar--the kind
with the "mother" in the bottom of the bottle. You can find it at
health/natural food stores.
Greg
At 10:30 PM 5/24/00 +0200, you wrote:
>Hi to all,
>
>some time ago a read in a book about a technic of decoration called
>"mocha". In
>case you don't know it by this name I try to explain.
>
>As far as I understood it means to take a little bit of tobacco, put it in
>water
>and let it soak for some days. Then mixing this broth with colouring oxides or
>stains and putting a little drop on a wet coloured slip layer will ramify all
>around this drop. It should look like computer pictures one knows from chaos
>mathematics. O.k. that is the theory.
>
>In practice when I tried it, the oxides didn't mix well, they didn't do at all
>what I expected them to do. There was only a point with so little
>ramification you
>would need a magnifier to see them.
>
>What was wrong? Should I add some glycerine, or something completely
>different?
>Any hint will be helpful.
>
>Sibylle
>
>______________________________________________________________________________
>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.
E-mail address:
gdlamont@isunet.net
Pottery Web Page:
http://www.ourwebpage.net/greglamont/
Mailing address and Phone:
Greg Lamont
3011 Northwood Drive
Ames, IA 50010-4750
(515) 233-3442
iandol on thu 8 jun 00
John Lockett, thank you for that information. This suggests that any =
additive must break the surface tension, which is what a detergent =
solution would do.
Your response is appreciated, Best regards, Ivor Lewis. S.Oz
sibylle on thu 8 jun 00
Hi Greg,
I don't remember if your reply was on the list but I got your information. Thanks
anyway. I will surely try it and share the result with anybody who is interested.
Sibylle
Gregory D Lamont schrieb:
> Sibylle,
>
> It seems my reply to this never made it to the list. This is probably old
> news, but I attended a workshop by Robin Hopper where he demonstrated the
> mocha diffusion technique. He recommended using natural vinegar--the kind
> with the "mother" in the bottom of the bottle. You can find it at
> health/natural food stores.
>
> Greg
>
>
Gregory D Lamont on sun 11 jun 00
At 03:50 PM 6/5/00 +0930, you wrote:
>Re: mixing mocha
>
>With all due respect to the information about mixing and making mocha =
>patterns given to us by Gregory Lamont and Eleanor Arkowitz, are acid =
>and alkaline being used here in the sense of aqueous solutions, just raw =
>clays and water. I would not like to get this confused with the notion =
>that the slips are acidic or basic in the same way that we treat the =
>materials when we write them down as a Seger formula for a glaze.
>
>Do I assume that because the manganese stain is mixed with cider vinegar =
>that the slips must have soda or pearl ash included in their formulation =
>and if so, how much?
>
>I have seen Robin Hopper do this but could not reproduce the figuring he =
>got.
>
>Ivor Lewis. South Australia.
>
>______________________________________________________________________________
Hi Ivor,
In looking through Hopper's book and my notes from the workshop I found no
mention of using either soda or pearl ash in either the clay slip or the
mocha "tea" solution.
Greg
E-mail address:
gdlamont@isunet.net
Pottery Web Page:
http://www.ourwebpage.net/greglamont/
Mailing address and Phone:
Greg Lamont
3011 Northwood Drive
Ames, IA 50010-4750
(515) 233-3442
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