James Blossom on mon 12 jul 99
-----Original Message-----
From: Michael Banks
To: CLAYART@LSV.UKY.EDU
Date: Friday, July 09, 1999 9:24 AM
Subject: Pottery on Wood Stove?
Not just annother blue VW story.
A Woman here in Albuquerque picked up $500,000 for spilling (her fault) hot
coffee in her lap. claimed it was too hot. Here is the (pottery-related)
kicker --
Albuquerque is at ~ 5000 foot altitude. Water here boils at a lower
temperature than
at sea-level; the woman sued for damages based on the cofee being too hot.
Since water boils at a lower temperature, it also holds less heat per unit
volume.
When bisque - firing at high altitude, allow for less time to de-hydrate
the ware.
Oh, -- the woman got her money even though MD' s *COULD NOT * have heated
her
coffee to a higher temperature than normal.
Mike Blossom
Sleeping Dog Designs
Albuquerque, N,M.
"No one will ever understand what bungling there has been, and what
culpability"
--Bertram Lenox-Simpson
>----------------------------Original message----------------------------
>Carla,
>
>It is not too technically difficult to make thermal shock resistant,
>stove-top pottery items and commercial potteries in Europe have produced
>these in the past. You just have to use low expansion materials.
Basically
>this means avoiding free- silica, soda, potash and lime-bearing minerals. A
>practical body can be made of about 50:50 silica-free ball clay and
petalite
>(or spodumene) plus added bentonite or hectorite to increase plasticity (as
>required).
>
>However there are real problems with such ware. The pots have poor thermal
>conductivity, meaning they get very hot at the point of contact with the
>heating surface, but do not transfer this heat efficiently around the sides
>or up into the contents.
>
>And, the big one, which puts-off most potters/manufacturers, is the
>liability issue. If you sell this stuff (particularly in the U.S.) you are
>vulnerable to damages litigation if the ware fails and burns someone. The
>ware may well be excellent, but if some plonker continues to use it after
it
>has been dropped and cracked, you may wear the cost. Remember the famous
>case (possibly apocryphal), where some twit got millions out of a fast-food
>company, when he/she/it spilt hot coffee on herself/himself/itself from a
>styrofoam cup parked between their thighs in their car :)
>
>Michael Banks,
>Nelson,
>New Zealand
>
>----- Original Message -----
>> ----------------------------Original message----------------------------
>> Hi Everyone - I have a question for the "experts" out there. I live in
>> Alaska and we have lots of people concerned about Y2K issues up here.
>> In addition, many people have wood stoves as a back up heat source for
>> normal winter power outages.
>>
>> My question: Can pottery be put on a wood stove and used to cook
>with?......(snip)
>
>> Carla in
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