Randy McCall on tue 19 dec 06
I am getting ready to make some plates. Is there a rule of thumb on the
number of pounds on each size plate. 10"? 12"? 14"? Using a hydrobat
hump mold.
I don't want to make them too heavy or too thick?
Thanks for any suggestions.
Randy
South Carolina
Pottery Web site
http://members.tripod.com/~McCallJ/index.html
Beth Spindler on tue 19 dec 06
Randy,
Why don't you try making a plate on the wheel head? Sure it takes a bit of
effort to remove the plate once it is made, but it really works well. I can
send photos of Seth Cardew making plates this way and I KNOW it works well. I
trried it and lo and behold, my plate came off beautifully. When you remove
plate from wheelhead, move the wire away from you and have the wheel turning very
slowly. Stop the wheel and then lift from the top of the plate and work down
- "handle it as if it were a baby" in Seth's words.
good luck!!!
Beth in VA....no expert plate maker by any means, just sharing experience. :)
Rikki Gill on tue 19 dec 06
Hi Randy,
I think three pounds of clay works well for me for a thrown 11' plate.
You could also roll out a slab, place on bat, throw to flatten lightly.
Best,
Rikki
rikigil@cwnet.com
www.rikkigillceramics.com
www.berkeleypotters.com
----- Original Message -----
From: "Randy McCall"
To:
Sent: Tuesday, December 19, 2006 5:03 AM
Subject: Plate Makers??????
>I am getting ready to make some plates. Is there a rule of thumb on the
> number of pounds on each size plate. 10"? 12"? 14"? Using a hydrobat
> hump mold.
>
> I don't want to make them too heavy or too thick?
>
> Thanks for any suggestions.
>
>
> Randy
> South Carolina
> Pottery Web site
>
> http://members.tripod.com/~McCallJ/index.html
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
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> melpots@pclink.com.
>
>
>
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Nancy on tue 19 dec 06
Beth would you share those with me too?
Also a few years ago, I took a workshop on Long Island, several
different people and one was a man who took a slab of clay, put it on a
bat then trimmed it just shy of the width of the bat (on the wheel of
course), he then compressed the center quite a bit and raised the lip
about 2" in and made a plate. It looked simple and easy but I didn't
try it.
Nancy
www.hilltoppottery.com
Beth Spindler wrote:
> Randy,
> Why don't you try making a plate on the wheel head? Sure it takes a bit of
> effort to remove the plate once it is made, but it really works well. I can
> send photos of Seth Cardew making plates this way and I KNOW it works well. I
> trried it and lo and behold, my plate came off beautifully. When you remove
> plate from wheelhead, move the wire away from you and have the wheel turning very
> slowly. Stop the wheel and then lift from the top of the plate and work down
> - "handle it as if it were a baby" in Seth's words.
>
> good luck!!!
>
> Beth in VA....no expert plate maker by any means, just sharing experience. :)
>
> ______________________________________________________________________________
> 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.
>
>
Victoria E. Hamilton on tue 19 dec 06
Randy -
I've not made plates using a hump mold, although it looks fairly simple to
me. I throw them on plaster batts, then they just pop off the batt once
enough moisture has been absorbed by the plaster. This way you get the
"whole" plate. You can also throw them on large, rigid batts, making sure
to cut them off with a wire several times with the wheel going quite slow.
Dry them slowly so they don't bump up in the middle. Once you've thrown a
plate and it's begun to set up, paint some wax resist around the rim (top &
bottom). This will slow down the drying of the edges, which is always the
first part of a piece that starts to dry.
Here is the amount of clay I use (give or take, depending on whether it's
stoneware or porcelain):
10" plate 4 lbs
12" plate 5.5 lbs
14" plate 7 lbs
Hope this helps.
Take care,
Vicki Hamilton
Millennia Antica Pottery
Seattle, WA
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Randy McCall
Sent: Tuesday, December 19, 2006 05:04
To: CLAYART@LSV.CERAMICS.ORG
Subject: [CLAYART] Plate Makers??????
I am getting ready to make some plates. Is there a rule of thumb on the
number of pounds on each size plate. 10"? 12"? 14"? Using a hydrobat
hump mold.
I don't want to make them too heavy or too thick?
Thanks for any suggestions.
Randy
South Carolina
Pottery Web site
http://members.tripod.com/~McCallJ/index.html
____________________________________________________________________________
__
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.
June Perry on tue 19 dec 06
It depends on the size of the plate you want to make. If you want a deep foot
ring, and/or a deep plate then you need to add more clay.
In general, 3-5 lbs should do it for a fired 10" plate . If you're claybody
has a 12.5% shrinkage, then a plate thrown to 12.5" should give you a 10"
plate.
I know someone who uses 6 lbs of clay for a 10" plate but that makes a very
heavy heavy plate. Shape and weight are just a matter of preference.
I generally tend to make my dinner sized plates lighter, figuring that
carrying a filled plate walking down the buffet line may be a bit of a burden to
some people.
Regards,
June Perry
http://shambhalapottery.blogspot.com/
http://www.angelfire.com/art2/shambhalapottery
cliff daniels on tue 19 dec 06
Randy,
When making plates, I throw them on canvas on a
bat. The canvas is cut to the size of the bat.
After you use them a while, they become
impregnated with slip, and are easy to stick to a
wooden bat. I dip them in water, shake of the
excess, and smear it onto the bat. Then with the
wheel turning, I take a paint scraper and press
it onto the bat, squeegeeing the excess water
off. It stays attached. When I am done
throwing, I run my wire under the canvas. Once
leather hard, the canvas peels off easily.
Because my kickwheel has a cement wheelhead, I
started using canvas all the time, right on the
wheel head. Then I just grab the end of the
canvas and slid it onto a bat to put it on a
shelf. This protects my hands from the abrasion
of the cement.
Cool idea. been using it for years.
Good luck,
Cliff
--- Randy McCall wrote:
> I am getting ready to make some plates. Is
> there a rule of thumb on the
> number of pounds on each size plate. 10"?
> 12"? 14"? Using a hydrobat
> hump mold.
>
> I don't want to make them too heavy or too
> thick?
>
> Thanks for any suggestions.
>
>
> Randy
> South Carolina
> Pottery Web site
>
> http://members.tripod.com/~McCallJ/index.html
>
>
______________________________________________________________________________
> 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.
>
The Mud Man
Clifford Daniels
1 Calvin Coombs Rd.
Colrain, MA 01340
413-624-0251
mudmanpottery@yahoo.com
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tinkerbellesarah on wed 20 dec 06
Ummm... I think the shrinkage example you gave is incorrect. A 12.5"
plate shrinking to 10" is a 20% shrinkage (12.5-10=3D2.5,
2.5/12.5=3D20%)... if you want a 10" plate and have 12.5% shrinkage then
throw it 11.25"
Sarah in Sitka
nothing witty to say tonight
--- In clayart@yahoogroups.com, June Perry wrote:
>
> It depends on the size of the plate you want to make. If you want a
deep foot
> ring, and/or a deep plate then you need to add more clay.
> In general, 3-5 lbs should do it for a fired 10" plate . If you're
claybody
> has a 12.5% shrinkage, then a plate thrown to 12.5" should give you
a 10"
> plate.
> I know someone who uses 6 lbs of clay for a 10" plate but that makes
a very
> heavy heavy plate. Shape and weight are just a matter of preference.
> I generally tend to make my dinner sized plates lighter, figuring that
> carrying a filled plate walking down the buffet line may be a bit of
a burden to
> some people.
>
> Regards,
> June Perry
> http://shambhalapottery.blogspot.com/
> http://www.angelfire.com/art2/shambhalapottery
>
>
___________________________________________________________________________=
___
> Send postings to clayart@...
>
> 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@...
>
Lee Love on wed 20 dec 06
On 12/20/06, tinkerbellesarah wrote:
> Ummm... I think the shrinkage example you gave is incorrect. A 12.5"
> plate shrinking to 10" is a 20% shrinkage (12.5-10=2.5,
> 2.5/12.5=20%)... if you want a 10" plate and have 12.5% shrinkage then
> throw it 11.25"
I have a bamboo shrinkage ruler I made using a go-tsun tombo
(dragonfly measuring guage) to mark the graduations with a sharpie.
Traditionally, pottery measurements are made from the carpenters
measure of shaku and tsun. A shaku is almost exactly a foot. A
tsun is 1/10th of a shaku. So usually, plates are measured in tsun
and shaku: go-tsun, rok-tsun, nana-tsun ...shaku. I make san,
go, roku, nana, hachi, ku and shaku plates.
--
Lee in Mashiko, Japan
Minneapolis, Minnesota USA
http://potters.blogspot.com/
"Let the beauty we love be what we do." - Rumi
"When we all do better. We ALL do better." -Paul Wellstone
Chris Trabka on wed 20 dec 06
Randy,
One of the things I became aware of after making my first set of plates is
the dishwasher. I made them all too big to fit in the dishwasher. I then
made a replacement set.
Chris
Ivor and Olive Lewis on thu 21 dec 06
Dear Randy McCall,=20
It is a relatively easy task to calculate the mass of clay need for any =
project with the help of a hand calculator, knowledge of junior high =
school maths and a good measure of the mass in kilograms of a ten cm =
cube of clay (weight of one litre) to estimate density of your own =
plastic material.
Best regards,
Ivor Lewis.
Redhill,
South Australia.
June Perry on thu 21 dec 06
Actually Sarah, I should have said "make the plate 11.5" to get a finished
10" plate with a claybody that has 12.5% shrinkage.
Regards,
June
http://shambhalapottery.blogspot.com/
http://www.angelfire.com/art2/shambhalapottery
Lee Love on fri 22 dec 06
I forgot to mention: I throw most of my plates off the hump, so I
do not measure out the clay for each plate. Also, if I am doing any
inlay on the plates, they have to be thicker, to handle the
impressions, so they don't deform too much. You can use the bamboo
pot lifters if you need to for plates, but I find it just as easy to
lift them off the hump with my hands.
--
Lee in Mashiko, Japan
Minneapolis, Minnesota USA
http://potters.blogspot.com/
"Let the beauty we love be what we do." - Rumi
"When we all do better. We ALL do better." -Paul Wellstone
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