robert craig on mon 26 may 97
Is all terra cotta heavily grogged? It seems that Italian terra cotta is
smoother than Mexican T.C., but all recipies I've seen contain 20-30+% grog
or sand. Does anyone have a recipe (if there is one) for a smoother terra
cotta?
Robert
Tony Hansen on tue 27 may 97
> Is all terra cotta heavily grogged? It seems that Italian terra cotta is
> smoother than Mexican T.C., but all recipies I've seen contain 20-30+% grog
> or sand. Does anyone have a recipe (if there is one) for a smoother terra
> cotta?
Terra Cotta is red burning earthenware. For a smooth body just use
straight
Redart clay. Add as much ball clay as necessary to make it more plastic.
--
=================================================================
Tony Hansen, IMC thansen@mlc.awinc.com
Vince Pitelka on tue 27 may 97
At 09:17 AM 5/26/97 -0400, you wrote:
>----------------------------Original message----------------------------
>Is all terra cotta heavily grogged? It seems that Italian terra cotta is
>smoother than Mexican T.C., but all recipies I've seen contain 20-30+% grog
>or sand. Does anyone have a recipe (if there is one) for a smoother terra
>cotta?
>
>Robert
Robert -
Here is a good smooth-grain rich-red-firing terracotta used by Francine
Ozereko in Pelham, MA. I know she passes out her recipe freely, and
hopefully will not mind me offering it here.
Francine Ozereko's Terracotta - cone 04 - dense, fine-grain body for
functional work - fires rich brick-red - excellent for sgraffito, mishima,
slip layering, etc.
Redart ------------- 60
XX Sagger -------- 12 (or an additional 12 ball clay)
Ball Clay ---------- 12
Talc ---------------- 10
3124 Frit ---------- 6
Total ------------- 100
Make sure you use 3124 frit, not 3134, and do not overfire this body or it
will bloat.
- Vince
Vince Pitelka - vpitelka@DeKalb.net
Phone - home 615/597-5376, work 615/597-6801
Appalachian Center for Crafts
1560 Craft Center Drive, Smithville TN 37166
boutique@mail.island.net on tue 9 dec 97
Dear Clayarters:
I recently got stuck with an order of lowfire terra cotta plates,
pasta bowls and serving bowls. This hasn't happened to us before,
but it was a custom order.
I am now looking to sell these pieces to anyone that can use them. I
have: 21 12" plates
13 10" Pasta bowls
6 13" Serving bowls
5 10 x 6" Cookie jars
7 9 x 5" casserole bowls
I know about deposits etc and had one, but the order was changed
after I was ready to ship.
I you can make use of this ware, please email me directly so as to
not plug up the list.
Thanks
Dave
Assumption Abbey on fri 31 jul 98
Dear Readers,
I am looking for a good reliable TERRA COTTA clay body that someone would
like to share. Also what is the best cone firing range and any
particulars. Thank you
Llewellyn Kouba
Clyde Tullis on sat 1 aug 98
This is pretty close to Stanly Mace Anderson's, Studio Potterv Vol.11 #2
Redart 65
Goldart 15
Fireclay (plastic, I use Lincoln Greenstripe) 10
Talc 10
+ Barium Carb and sometimes some sand and or nylon fibers.
Assumption Abbey wrote:
> ----------------------------Original message----------------------------
> Dear Readers,
>
> I am looking for a good reliable TERRA COTTA clay body that someone would
> like to share. Also what is the best cone firing range and any
> particulars. Thank you
>
> Llewellyn Kouba
Assumption Abbey on sun 2 aug 98
At 09:12 AM 8/1/98 EDT, you wrote:
>----------------------------Original message----------------------------
>This is pretty close to Stanly Mace Anderson's, Studio Potterv Vol.11 #2
>Redart 65
>Goldart 15
>Fireclay (plastic, I use Lincoln Greenstripe) 10
>Talc 10
>+ Barium Carb and sometimes some sand and or nylon fibers.
>
>Assumption Abbey wrote:
>
>> ----------------------------Original message----------------------------
>> Dear Readers,
>>
>> I am looking for a good reliable TERRA COTTA clay body that someone would
>> like to share. Also what is the best cone firing range and any
>> particulars. Thank you
>>
>> Llewellyn Kouba
>---------
Dear Clyde,
Thanks much for your response to my search for a terra cotta formulae.
yesterday I mixed up the only formulae I had in the studio. I am not in my
studio environs here in the computer room but the recipe had quite a bit of
red art, gold art and some EP Green and a little talc. This one also
called for a little bit of barium and (*I left this out)...and I will have
one mixer to try. I thought the 'dough' was more liek a dry mashed
potaotes and not very elastic at all. I really wonder what it is going to
be like to throw? In some ways I wished I had waited to mix any at all but
I guess 'try out' is always a good way of 'finding out'!
Do you know what the barium is for? I was hesitant to be 'playing' with
barium. It must have some purpose in the body. Can any of the readers
answer this one? Also I don't think you mentioned what temp to fire the
terra cotta formulae. I want to give your recipe a try and will as soon as
I order more red art as I have used the last of it out. I also may have to
find a sub for the fireclay as I don't know where you get the Lincoln
Greenstripe..and may not be available from my usual distributor?
Thanks for the response to TERRA COTTA
Thanks for the CLAYART site as it is such a wonderful learning tool!!
Llewellyn Kouba
ABBEY POTTERY
ed on wed 22 nov 00
I have fired some mirror frames and pots made from terra cotta which matures
at cone 06. The frames look as though they will pick up and retain dust.
Has anyone had experience with finishes applied before or after firing
(colors as well).?????
mudlark on wed 22 nov 00
Dilute FUTURA floor polish with water 1 to 1 Spray it on with an air brush or a
spray bottle. You can buy no fire acrilics from your supplier
ed wrote:
> I have fired some mirror frames and pots made from terra cotta which matures
> at cone 06. The frames look as though they will pick up and retain dust.
> Has anyone had experience with finishes applied before or after firing
> (colors as well).?????
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
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>
> Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
Snail Scott on wed 22 nov 00
There are some decent-looking sealants for
earthenware (such as saltillo floor tile),
available at tile supply companies.
-Snail
At 12:29 PM 11/22/00 -0500, you wrote:
>I have fired some mirror frames and pots made from terra cotta which matures
>at cone 06. The frames look as though they will pick up and retain dust.
>Has anyone had experience with finishes applied before or after firing
>(colors as well).?????
>
Martin Howard on thu 23 nov 00
Wouldn't terra sigillata be the correct filler for the pores in Terra Cotta?
Just dip it in.
I use it for the base and the bottom parts of most pots now. It makes
everything smooth and feels good, as well as takes a polish.
Martin Howard
Webb's Cottage Pottery
Woolpits Road, Great Saling
BRAINTREE, Essex CM7 5DZ
England
martin@webbscottage.co.uk
John Guerin on thu 23 nov 00
In a message dated 11/22/00 7:58:19 PM Central Standard Time,
snail@MINDSPRING.COM writes:
<< There are some decent-looking sealants for
earthenware (such as saltillo floor tile),
available at tile supply companies. >>
JASCO TILE SEALANT available at Home Depot works very well.
John Guerin
Tucson AZ
Gayla Lemke on fri 24 nov 00
You can buy regular acrylic paints and spray sealer for CHEAP at Arts &
Crafts stores...try Hobby Lobby. You can get the spray sealer in matt, satin
or glossy depending on what king of finish you want.
Stephani Stephenson on thu 17 may 01
Tim
This is a very general question so this answer will be very general.
Terra cotta bodies differ GREATLY. The main variable for how and what
you build will be the
amount (and sizes) of grog in the body. There is as much variation
with red terra cotta as with other clays.
By the way, in reading about architectural terra cotta I have
learned that 'Terra Cotta' simply means 'burnt earth' and refers to
fired (esp earthenware) clays of all colors, not just red, though to
those of us in the U.S. it seems to mean a red /iron bearing low to mid
temp. firing clay body.
I have seen terra cotta bodies that have very little grog and are
useless (or will-make-you crazy trying) for sculptural purposes you
describe. They warp, they crack, they flop, won't join properly.
Then there are monster reds like Aardvark's Dixon Clay with which you
could probably build a life-size airplane with little technical
difficulty. However, in Dixon, the grog is very large in size so one
must work with the big picture in mind and not plan on carving small
details. This clay body is named for T.J. Dixon , a former teacher and
very accomplished sculptor , also a Leucadian, who does life-size
figurative sculpture and builds and fires her work SOLID . I think this
body must be 40% grog.
There are many clays in between.
One other tip. You may find that with the grogged Terra Cotta bodies you
need to work thicker. You will likely be firing at cone 2 or lower,
though some clays like the Dixon will take up to cone 6. At cone 10 the
fired hardness of stoneware bodies allow you a durable product with a
3/8" to 1/2 thickness. To achieve durability using handbuilt
techniques with lower fired and grogged T.C.. body you may be up in
the 3/4" to 11/2 " range. Some of the pressed larger pieces we make
actually are in the 2-4 inch thick range.
But it all depends on factors like size , firing temp, and clay body, so
can't be more specific than that.
Get to know your clay. All T.C.s are not created equal......
Can't advise as to the wingspan issue : again it depends on the
particulars of your situation. There are many techniques and processes
out there. Snail mentioned a few. Others may suggest paper clay,
In the end, that is where the designer, the dreamer, the thinker and the
builder in each of us has to dance....... or wrestle!!
Stephani Stephenson
Leucadia CA
mudmistress@earthlink.net
http://home.earthlink.net/~mudmistress/
http://www.alchemiestudio.com
J Lutz on thu 4 may 06
American Terra Cotta
This site is a companion to a book about the history of the American
Terra Cotta Corporation (1881-1966), which primarily produced terra
cotta tiles and embellishments for building exteriors and interiors.
The site features photos of buildings in Chicago, Minneapolis, and
other cities in the Midwest. Also includes images of items produced
for specific architects (such as Louis H. Sullivan) and Teco vases,
and an illustrated description of how architectural terra cotta was
made. http://www.terracottabuildings.com
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