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sieving throwing clay

updated sat 24 mar 12

 

Dan Saultman on thu 22 mar 12


Thank you John.

Pitch the clay!! seems to be the common vote.

Early on in my investigation of this plan, my local clay producer
said - throw it out!
I thought, "Hmm is this just a lazy opinion or a serious bit of advice."
But then Steve Mills said the same thing - Plaster is disaster!
He reminded me that time is money - get new clay!

Hard to fight against wisdom. Thanks for yours.


Dan

Dan Saultman
Detroit
http://www.saultman.com




On Mar 22, 2012, at 8:57 PM, JRodgers wrote:

> Dan,
>
> I work with plaster a lot in my work. If the clay is contaminated
> with plaster - however small - throw it out. It's not worth the
> effort. You will continue to have pop-outs and blow-outs however
> diligent you are in trying to remove the plaster.
>
> BTW, I have used plaster bats for years with few if any problems. I
> really like the self-release feature of plaster bats. The source of
> plaster bits in the clay come from my other clay/plaster
> activities. I just have to be very careful. That works.
>
> Good Luck.
>
> John Rodgers
>
> On 3/22/2012 6:33 PM, Dan Saultman wrote:
>> While learning to reclaim clay with my new Peter Pugger I reclaimed
>> some clay that had plaster powder in with the clay. (I used to reface
>> my plaster bats before throwing on them and that plaster dust
>> eventually got mixed in with the clay scraps.) Now, after repugging
>> this clay I have small BB sized pellets of plaster in the clay. It
>> appears that the plaster binds with itself and makes these little
>> pieces of plaster. So I have run this debris clay through my slab
>> roller on a very thin setting and then have broken up the dry pieces
>> in a large pail. I plan to make a slurry and sieve this slurry to get
>> the debris out of it.
>>
>> Ok. The question: what size mesh should I use to screen this slurry.
>> I am told by the clay maker that they use 30 mesh grog in some of
>> their clays, though mine is a smoother blend - less groggy. I do not
>> want to extract the good parts of the clay mixture just these larger
>> pieces of plaster and debris. I have a lot of this clay - it's worth
>> it to me to give it a try. Any suggestions about mesh and other
>> thoughts?
>>
>> Thanks,
>>
>> Dan
>>
>>
>> Dan Saultman
>> Detroit
>> http://www.saultman.com
>>
>
>

JRodgers on thu 22 mar 12


Dan,

I work with plaster a lot in my work. If the clay is contaminated with
plaster - however small - throw it out. It's not worth the effort. You
will continue to have pop-outs and blow-outs however diligent you are in
trying to remove the plaster.

BTW, I have used plaster bats for years with few if any problems. I
really like the self-release feature of plaster bats. The source of
plaster bits in the clay come from my other clay/plaster activities. I
just have to be very careful. That works.

Good Luck.

John Rodgers

On 3/22/2012 6:33 PM, Dan Saultman wrote:
> While learning to reclaim clay with my new Peter Pugger I reclaimed
> some clay that had plaster powder in with the clay. (I used to reface
> my plaster bats before throwing on them and that plaster dust
> eventually got mixed in with the clay scraps.) Now, after repugging
> this clay I have small BB sized pellets of plaster in the clay. It
> appears that the plaster binds with itself and makes these little
> pieces of plaster. So I have run this debris clay through my slab
> roller on a very thin setting and then have broken up the dry pieces
> in a large pail. I plan to make a slurry and sieve this slurry to get
> the debris out of it.
>
> Ok. The question: what size mesh should I use to screen this slurry.
> I am told by the clay maker that they use 30 mesh grog in some of
> their clays, though mine is a smoother blend - less groggy. I do not
> want to extract the good parts of the clay mixture just these larger
> pieces of plaster and debris. I have a lot of this clay - it's worth
> it to me to give it a try. Any suggestions about mesh and other
> thoughts?
>
> Thanks,
>
> Dan
>
>
> Dan Saultman
> Detroit
> http://www.saultman.com
>

David Woof on thu 22 mar 12


Dan man! I think you have yourself a bit stuck in the moment......
If you seek punishment=3D3B advertise for a dominating partner=3D2C or walk=
in =3D
a bar after 1 pm and insult the nastiest gal or guy in the place.=3D20
=3D20
Just....don't beat yourself up in the studio. =3D20
=3D20
What are you doing wasting time refacing plaster batts (or even using them =
=3D
in the first place and in a way that you would feel the need to reface them=
=3D
and contaminate your clay...)=3D20
=3D20
Dump them=3D2C smash them up and plow them into the garden!!! Set yourself =
fr=3D
ee!!!
=3D20
Buy some new plastic Batts. Or look up Vince's posts=3D2C and articles on v=
ar=3D
ious masonite=3D2C etc. batts and how to make them.
=3D20
And ask yourself how committed are you to the professionalism of the craft =
=3D
if you would risk wasting all that time sieving clay on a hope and a prayer=
=3D
that you are doing it right=3D2C and then possibly frittering away even mo=
re=3D
time making and firing good pots that may still lime pop thru the best wor=
=3D
k to ever come out of the kiln for you?=3D20
=3D20
How much clay are you really talking about losing? Donate it to the neighb=
=3D
orhood kids. Give them some joy to experience and move on. =3D20
=3D20
If you can afford a new Peter Pugger I'm guessing you can have a ton of fre=
=3D
sh clay at your door in two days! Right?
=3D20
Respectfully=3D3B let go=3D2C and best wishes to the top=3D2C you can do it=
=3D2C ju=3D
st don't play pattie cake with crap. For POTs Sake!!!
=3D20
David Woof
=3D20
Thru good times and bad I've always kept the attitude of being willing to e=
=3D
at beans and gnaw the meat off a road killed Javelina if that is what it ta=
=3D
kes to afford good tools=3D2C equipment=3D2C and materials.
______________________________________________________
=3D20
=3D20
17. Sieving Throwing Clay
Posted by: "Dan Saultman" design@SAULTMAN.COM=3D20
Date: Thu Mar 22=3D2C 2012 5:01 pm ((PDT))

While learning to reclaim clay with my new Peter Pugger I reclaimed
some clay that had plaster powder in with the clay. (I used to reface
my plaster bats before throwing on them and that plaster dust
eventually got mixed in with the clay scraps.) Now=3D2C after repugging
this clay I have small BB sized pellets of plaster in the clay. It
appears that the plaster binds with itself and makes these little
pieces of plaster. So I have run this debris clay through my slab
roller on a very thin setting and then have broken up the dry pieces
in a large pail. I plan to make a slurry and sieve this slurry to get
the debris out of it.

Ok. The question: what size mesh should I use to screen this slurry.
I am told by the clay maker that they use 30 mesh grog in some of
their clays=3D2C though mine is a smoother blend - less groggy. I do not
want to extract the good parts of the clay mixture just these larger
pieces of plaster and debris. I have a lot of this clay - it's worth
it to me to give it a try. Any suggestions about mesh and other
thoughts?

Thanks=3D2C

Dan =3D

Dan Saultman on thu 22 mar 12


While learning to reclaim clay with my new Peter Pugger I reclaimed
some clay that had plaster powder in with the clay. (I used to reface
my plaster bats before throwing on them and that plaster dust
eventually got mixed in with the clay scraps.) Now, after repugging
this clay I have small BB sized pellets of plaster in the clay. It
appears that the plaster binds with itself and makes these little
pieces of plaster. So I have run this debris clay through my slab
roller on a very thin setting and then have broken up the dry pieces
in a large pail. I plan to make a slurry and sieve this slurry to get
the debris out of it.

Ok. The question: what size mesh should I use to screen this slurry.
I am told by the clay maker that they use 30 mesh grog in some of
their clays, though mine is a smoother blend - less groggy. I do not
want to extract the good parts of the clay mixture just these larger
pieces of plaster and debris. I have a lot of this clay - it's worth
it to me to give it a try. Any suggestions about mesh and other
thoughts?

Thanks,

Dan


Dan Saultman
Detroit
http://www.saultman.com

Steve Mills on fri 23 mar 12


Dan,=3D20
Part of my clay mix is a local clay with a high percentage of iron bearing =
m=3D
udstone in it. I have to sieve down to 60 to get rid of it, and that takes =
A=3D
LL the "guts" out of that, making it only suitable for very small fine piec=
e=3D
s on its own!
Having twice in the past suffered (and I mean that!) from plaster contamina=
t=3D
ion, my solution is to ditch it and get new clay. In both cases I got rid o=
f=3D
half a ton, it was (for me) not worth the risk, time, and hassle to try to=
r=3D
etrieve it. Clay is the least expensive cost in production, Time the most e=
x=3D
pensive!
Do yourself a favour.=3D20

Steve M


Steve Mills
Bath
UK
www.mudslinger.me.uk
Sent from my iPod


On 22 Mar 2012, at 23:33, Dan Saultman wrote:

> While learning to reclaim clay with my new Peter Pugger I reclaimed
> some clay that had plaster powder in with the clay. (I used to reface
> my plaster bats before throwing on them and that plaster dust
> eventually got mixed in with the clay scraps.) Now, after repugging
> this clay I have small BB sized pellets of plaster in the clay. It
> appears that the plaster binds with itself and makes these little
> pieces of plaster. So I have run this debris clay through my slab
> roller on a very thin setting and then have broken up the dry pieces
> in a large pail. I plan to make a slurry and sieve this slurry to get
> the debris out of it.
>=3D20
> Ok. The question: what size mesh should I use to screen this slurry.
> I am told by the clay maker that they use 30 mesh grog in some of
> their clays, though mine is a smoother blend - less groggy. I do not
> want to extract the good parts of the clay mixture just these larger
> pieces of plaster and debris. I have a lot of this clay - it's worth
> it to me to give it a try. Any suggestions about mesh and other
> thoughts?
>=3D20
> Thanks,
>=3D20
> Dan
>=3D20
>=3D20
> Dan Saultman
> Detroit
> http://www.saultman.com