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talc in school clay/thoughts

updated fri 17 aug 07

 

mel jacobson on wed 15 aug 07


the thread last week that john posted was about
talc in SCHOOL clay.

bill merrill has great ideas about using talc in his
clay. it is solid thinking and he knows what he is doing.

when a manufacturer adds any material that is
on the `questionable` list and that material gets
into a school....well, wether it is good or not,
a contaminate or not, no matter -what it is...if the
`authority` thinks it will kill kids....it is gone.
and that will take another valued ceramic material
off the shelf. forever. there will be no argument from
a `potter` that will turn their heads.

i have no fear of lead. i would use it in decorative
glazes. i would know how to handle it, how to fire it
and make it safe. i would never use it around a school.
(i don't use lead or barium, and won't for obvious reasons.)

as i have said many times in the past...i re/make all of my
own clay. it is hard work, and many think i am off the
`rocker` to work to make clay...it comes in boxes, ready to
go from continental...just open the box, make pots.

well, i have never really used commercial stuff. clay or glaze.
i have always made my own. just have. i want a `look` about
my work. i cannot buy that ready made. i may want to start
adding talc as bill merrill does...i grind my own taconite pellets
into raw iron for spotting. i gather iron sand on beaches along the
north shore of lake superior...for spotting in my work. i love the
iron breaks that occur naturally. i could not add illmanite...
it looks fake. but, i don't want someone to take products off
the shelf at continental clay...and say `you can't use this, it is
not safe.` i prefer to make that call.

i know we live in a society where kids can't play marbles without a
helmet and knee pads. my mom actually taught us not to eat `paint`.
in fact, kids are protected beyond thinking..then their parents buy them
a 5,000# bomb when they turn sixteen...and they rush onto the roads
driving 80 with a cell phone in their ear...killing others and themselves.

there is a strong theory
emerging that most road rage is a result of spoiled kids becoming adults
and `knowing they own the road, `mommy told me i am very, very special``.
as a teacher, i saw it coming. i called it `fake self image`.

as someone said...there are many good low fire white clays out there.
there are other good fluxes to use. but, we have gone through it all,
over and over...salt kilns kill, wood kilns pollute, ban it all. ban
it, ban it.
and then it becomes another political agenda to control us.
not for me.
mel





from: mel/minnetonka.mn.usa
website: http://www.visi.com/~melpots/

Clayart page link: http://www.visi.com/~melpots/clayart.html

Edouard Bastarache Inc. on wed 15 aug 07


Mel,

maybe we should compare the exposure to fibers
of asbestos to the potter's?


Gis la revido,

Edouard Bastarache
Spertesperantisto

Sorel-Tracy
Quebec
http://perso.orange.fr/smart2000/livres.htm
http://www.pshcanada.com/Toxicology.htm
http://www.ceramique.com/librairie/
http://www.flickr.com/photos/30058682@N00/
http://myblogsmesblogs.blogspot.com/

Edouard Bastarache Inc. on wed 15 aug 07


Mel,

I meant the exposure of asbestos miners to
the potter's.


Gis la revido,

Edouard Bastarache
Spertesperantisto

Sorel-Tracy
Quebec
http://perso.orange.fr/smart2000/livres.htm
http://www.pshcanada.com/Toxicology.htm
http://www.ceramique.com/librairie/
http://www.flickr.com/photos/30058682@N00/
http://myblogsmesblogs.blogspot.com/


----- Original Message -----
From: "Edouard Bastarache Inc."

To:
Sent: Wednesday, August 15, 2007 12:18 PM
Subject: Re: talc in school clay/thoughts


> Mel,
>
> maybe we should compare the exposure to fibers
> of asbestos to the potter's?
>
>
> Gis la revido,
>
> Edouard Bastarache
> Spertesperantisto
>
> Sorel-Tracy
> Quebec
> http://perso.orange.fr/smart2000/livres.htm
> http://www.pshcanada.com/Toxicology.htm
> http://www.ceramique.com/librairie/
> http://www.flickr.com/photos/30058682@N00/
> http://myblogsmesblogs.blogspot.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.
>
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition. Version: 7.5.476 /
> Virus Database: 269.11.19/953 - Release Date:
> 2007-08-14 17:19
>
>

Ron Roy on thu 16 aug 07


I have sent Jim an email about this - I do not advise using alkaline earths
to flux high fire clay bodies - cristobalite is a very real problem -
especially with iron rich bodies.

If you do decide to try this - read Peter Sohngen's article in Studio
Potter Vol 28#1 before you decide to do it - and have the body measured in
a dilatometer to see how much cristobalite you are going to have to deal
with.

If you do decide to use talc in a clay body make sure it's not the kind
that will damage your lungs.

RR



>bill merrill has great ideas about using talc in his
>clay. it is solid thinking and he knows what he is doing.
>
>when a manufacturer adds any material that is
>on the `questionable` list and that material gets
>into a school....well, wether it is good or not,
>a contaminate or not, no matter -what it is...if the
>`authority` thinks it will kill kids....it is gone.
>and that will take another valued ceramic material
>off the shelf. forever. there will be no argument from
>a `potter` that will turn their heads.
>
>i have no fear of lead. i would use it in decorative
>glazes. i would know how to handle it, how to fire it
>and make it safe. i would never use it around a school.
>(i don't use lead or barium, and won't for obvious reasons.)
>
>as i have said many times in the past...i re/make all of my
>own clay. it is hard work, and many think i am off the
>`rocker` to work to make clay...it comes in boxes, ready to
>go from continental...just open the box, make pots.
>
>well, i have never really used commercial stuff. clay or glaze.
>i have always made my own. just have. i want a `look` about
>my work. i cannot buy that ready made. i may want to start
>adding talc as bill merrill does...i grind my own taconite pellets
>into raw iron for spotting. i gather iron sand on beaches along the
>north shore of lake superior...for spotting in my work. i love the
> iron breaks that occur naturally. i could not add illmanite...
>it looks fake. but, i don't want someone to take products off
>the shelf at continental clay...and say `you can't use this, it is
>not safe.` i prefer to make that call.
>
>i know we live in a society where kids can't play marbles without a
>helmet and knee pads. my mom actually taught us not to eat `paint`.
>in fact, kids are protected beyond thinking..then their parents buy them
>a 5,000# bomb when they turn sixteen...and they rush onto the roads
>driving 80 with a cell phone in their ear...killing others and themselves.
>
> there is a strong theory
>emerging that most road rage is a result of spoiled kids becoming adults
>and `knowing they own the road, `mommy told me i am very, very special``.
>as a teacher, i saw it coming. i called it `fake self image`.
>
>as someone said...there are many good low fire white clays out there.
>there are other good fluxes to use. but, we have gone through it all,
>over and over...salt kilns kill, wood kilns pollute, ban it all. ban
>it, ban it.
>and then it becomes another political agenda to control us.
>not for me.
>mel
>
>
>
>
>
>from: mel/minnetonka.mn.usa
>website: http://www.visi.com/~melpots/
>
>Clayart page link: http://www.visi.com/~melpots/clayart.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.

Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0