ASHPOTS@aol.com on sat 7 sep 96
Howdy all in Claytime: Claudia and I just got back from month in Maine. I
met lots of potters and I brought back some interesting clay, native to Maine
soil. These clays were fired mostly at 04 and it's a red clays. I'm going
to try to use them in my glazing. I have been using 50% ash and 50% red art
as my glaze. Now I'm going to try 50% ash and this clay from Maine.
Hopefully it will fire in a week. I am firing at cone 10. One of the clays
is called a blue clay, which fires red. On another note, I went to a mexican
restaurant on Miami Beach, Florida where all the food was served in beautiful
hand-made lead-glazed pottery. I got three different hot sauces and cute
little lead-glzed pots. I didn't know what to tell them so I didn't say
anything. I'm sure they wouldn't care anyway. Is there any paperwork that I
could show these people that protects customers like me from being poisoned?
ALSO, on yet another note, I just cut three jack fruits off my j.f. tree and
one was 52 pounds. Wow. Ron Roy - it's hot in Miami. That's why I went to
Maine.
MARK
Don Jones on sun 8 sep 96
On another note, I went to a mexican
>restaurant on Miami Beach, Florida where all the food was served in beautiful
>hand-made lead-glazed pottery. I got three different hot sauces and cute
>little lead-glzed pots. I didn't know what to tell them so I didn't say
>anything. I'm sure they wouldn't care anyway. Is there any paperwork that I
>could show these people that protects customers like me from being poisoned?
>MARK
Mark,
Could you say again how you could tell these pieces were lead-glazed just
by looking at them?
Don Jones
claysky@indirect.com
Don Sanami on sun 8 sep 96
The entire subject of lead-glazed pots is so beset
with hysteria and myth it is difficult to answer a question directly.
What % of lead? How well is the lead trapped in the melt? Under what
conditions was the pottery fired? Do thew same people eat from the same
pots,day-in-day-out? Are acidulous foods consumed from the lead-glazed
ware? Traditionally potting was carried out under oout-of-doors
conditions which usually meant plenty of ventilation thus the potters
risk was minimal.In modern studios...overheated as they generally are,no
amount of ventilation will solve the potters problem of both air-born
dust as well as tobacco as a carrier,(Or other carriers).We became
concerned about lead away back in the 1930's. When we shifted from
low-fired ware to stoneware,we also shifted to Barium compounds,(!!)(
surely no better than lead given the earlier conditions,(Continual
use,dust carriers,poor ventilation) Lead-glazing fell into disuse
everywhere in N.America and Europe,although not in Mexiuco or Spain.EEven
among Japanese producers of tableware,there have been occasions when
customs has refused entry within the past ten years,because of higher
than allowed %'s of lead. I repeat: If all conditions are met regarding
use as well as %,s and proper firing,lead Carbonate may be
used,particularly in decorative ware or ware intented for only occasional
use for food. A very sticky discussion,given all of the other
potentiually injurious materials we use as potters,scultors/painters.Don
MorrillOn Sun, 8 Sep 1996, Don Jones wrote:
> ----------------------------Original message----------------------------
> On another note, I went to a mexican
> >restaurant on Miami Beach, Florida where all the food was served in beautiful
> >hand-made lead-glazed pottery. I got three different hot sauces and cute
> >little lead-glzed pots. I didn't know what to tell them so I didn't say
> >anything. I'm sure they wouldn't care anyway. Is there any paperwork that I
> >could show these people that protects customers like me from being poisoned?
>
> >MARK
>
> Mark,
> Could you say again how you could tell these pieces were lead-glazed just
> by looking at them?
> Don Jones
> claysky@indirect.com
>
Kit DeCew on mon 9 sep 96
I heard at the NewOrleans NCECA conference that lead frees up during firing
and contaminates the lining of your kiln, shelves and other pieces in the
same firing. Does this also mean that in subsequent firings, the lead again
frees up from the lining and shelves to contaminate that load too? How much?
Thanks, KitDeCew
Autumn Downey on mon 9 sep 96
I would like to add some questions about lead glazes having been used in a kiln
I am considering buying an electric kiln that was used (not extensively - 20 loa
TIA
Autumn Downey
downeya@internorth.com
Yellowknife, NWT, Canada
WESLEY C. ROLLEY on fri 11 oct 96
Mark,
That was a nice general discussion, but you did not answer Don Jones's
question. How could you tell? Or do you carry a lead testing kit around
with you?
Wes Rolley
>>
>> Mark,
>> Could you say again how you could tell these pieces were lead-glazed just
>> by looking at them?
>> Don Jones
>> claysky@indirect.com
>>
>
>
| |
|
