[Ansteorra] a question for any potters... a new one...

[Deirdre]

This is very good information - I'd like to reiterate your last statement,
since it was an answer to the original question - DON'T put salt in unglazed
pottery - see explanation below.

Thanks so much for the info.
And thanks to everyone who commented on my uninformed question.
Deirdre

-----Original Message-----
From: ansteorra-bounces at lists.ansteorra.org
[mailto:ansteorra-bounces at lists.ansteorra.org]On Behalf Of Shawn Willey
Sent: Saturday, October 28, 2006 2:56 PM
To: Kingdom of Ansteorra - SCA, Inc.
Subject: Re: [Ansteorra] a question for any potters... a new one...


I have just gotten this string on leaded glazes and clay, I hope this will
help everyone.
First all clay has lead in it if it has been mined from the earth.
A lot of glazes have lead in them these are refered to as none food safe.
lead itself is a toxin that will cause severe retardation in very young
children if recieved in suffiecient quantities mg/day type thing
as for the story of the wife who killed here husband by leaving a small
unglazed spot in his cup would have taken to many decades to kill him (one
of those urban legends)
Bisqued pottery (fired) still has lead in it enough to exceed the fda and
epa standards and over time can make you ill, that is why they (the
Goverment) required lead free glazes in products to be used for food and
this is even strictor in california where they have prop 15 leaded warnings
on items not fit for human consumption.
Lead is actually added in some instances for the color effect it has
especially for RED the industry is now coming out with lead free colors that
are just as brilliant as the leaded ones.
Unglazed pottery is (outside the piece) great for helping keep contents cool
when wetted (evaporative cooling draws the heat out of the bisque)
As for salt dont use unglazed pottery, salt will leach lead from your stuff
faster than regular water, as will any acidic liqued will also.
Torquil Seamus
Dragon's Laire Ceramics
P.S.
Potters Guild meetings are usually 2nd thursday of the month with the
exception of Oct and Nov. Oct is Special project the 29th and Nov is in
question will announce the date soon.


On 10/28/06, L T <ldeerslayer at yahoo.com> wrote:
>
> Hmmm...learn something new every day....
>
> We did limited dinnerware production in my step-monster's ceramic shop
> and never tested either...but then that was when I was in High School
> which as of this spring it will be 25  years since I graduated... ;)
>
> Wow...pretty wierd to think that I've been in the SCA most of my adult
> life...
> got in when I was 22...in many ways I "grew up" here...and am still
> growing...
> boggles my mind...
>
> Thanks,
>
> L DeerSlayer
>
> Patty <prand at swbell.net> wrote: Hey Lorraine,
>
> This is the "Note to manufacuters of dinner ware" where I used to get my
> glazes...
> "It is your responsibility by law to ensure the safety of your ware
> through testing and to implement appropriate firing controls, controls for
> thinkness of glaze applications, controls for kiln loading and other
> production measures."
> There are too many variables involved in the application and firing of the
> glazes I guess.  When I made pottery many years ago, not sure this warning
> was in place, but we never tested...shame, shame.
>
> Caitriona
>
> L T  wrote:
> I'm thinking, that, if you use commercial glazes that are food safe on the
> areas that come into contact with food then you should not have to test,
> since the company already has done the requisite testing.
>
> L DeerSlayer
>
>
>
>
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