pdp1@EARTHLINK.NET on wed 11 feb 04
Hi Carol,
Good idea.
The presence of the Chicken Fat just might retard the
absorption somewhat...while the Parsely or other Herbs may
contain surfactants as in combination with a liberal dash of
Salt, just may mitigate in favor of it...so...it might just
work out about even that-a-way.
Too...
With a nice old style Pressure Cooker, one may attain the
same result in a tenth the time or so...
Just let 'er run at twenty or thirty pounds or so for a
little while, hell, fourty if ye like, and in that case,
maybe a very little while is plenty, and you are done, or,
the Chicken and so on is...
Let 'er go much more and even the 'bones' get pretty
tender...or as well the whole becomes rather sad and macabre
looking, all slumped' and so on...not so good...live 'n
learn I guess...
Phil
Las Vegas
----- Original Message -----
From: "Carol Tripp"
> Why not put the clay block into the pot with the chicken
carcess,
> veg/whatever you toss into the broth and let that boil for
two hours? I
> can't imagine that it would make any difference to the
absorbtion figures or
> the broth for that matter and you could kill two birds
with one stone;-) And
> maybe all the bones and things will stop the clay block
rattling. Well, it
> is an idea...
> Best regards,
> Carol
> Dubai, UAE
>
> May wrote:
> >Attempting to make an absorption test with a clay block
of about 130 gm.
> >But
> >the boiling water and the clay is making lots of noise. I
have a open plan
> >kitchen/living room situation. The noise is keeping me
from watching TV. It
> >was on low heat but still.....
> >
> >Anyways, any alternative method or suggestions?
> >
> >Also boiling water for 2 hours seems to be a such a waste
of energy. Can I
> >make use of this process and do some cooking at the same
time? Like making
> >chicken broth and steam the clay on top?
Earl Krueger on fri 13 feb 04
Question:
Why does the protocol specify boiling for 30 minutes?
Is the whole point of boiling to cause the air trapped
in the ceramic to expand and be forced out so it can
be replaced with water?
or,
Does the boiling dissolve the soluble components
which would otherwise be slowly dissolved over a
period of time once the ceramic was placed in use?
or,
???
Just curious.
Earl K...
Bothell, WA, USA
John Hesselberth on sat 14 feb 04
Hi Earl,
Your two points below are certainly possible. I think the primary
reason is just to shorten the test. Transport phenomena are temperature
dependent and the sample will become saturated more quickly in boiling
water than in room temperature water. I personally think 30 minutes is
too short. I do it for 2 hours, although I admit my data to prove that
2 hours is better is sketchy.
Regards,
John
On Friday, February 13, 2004, at 11:19 AM, Earl Krueger wrote:
> Question:
> Why does the protocol specify boiling for 30 minutes?
>
> Is the whole point of boiling to cause the air trapped
> in the ceramic to expand and be forced out so it can
> be replaced with water?
>
> or,
>
> Does the boiling dissolve the soluble components
> which would otherwise be slowly dissolved over a
> period of time once the ceramic was placed in use?
>
> or,
>
> ???
>
> Just curious.
>
http://www.frogpondpottery.com
http://www.masteringglazes.com
Ron Roy on sun 15 feb 04
Just a couple of thoughts on this - remember - what you are looking for is
relative data. Doing the same thing each time will give you what you need.
The test data I use gives me the information I need to make the proper
adjustments so that clay will not leak when fired to the recommended cone.
Boil 4 different samples of the same clay for different periods of time and
see what the differences are.
Rhodes initial instructions were - 2 hours under water - are equal to ?
min. in a steam orthoclave - that can be checked as well.
What you want to know is - at what % absorbency does the clay start leaking.
It's not rocket science and it's all relative. If you want to compare your
test results with Axner's and Tuckers - it's a 1/2 inch by 1 inch by 6 inch
bar - weighed as soon as it comes out of the highest firing and boiled
right away for two hours.
What most instructions leave out is - cool the bar with cold water before
weighing so water does not evaporate while you are weighing - just pat dry.
No use waiting to weigh dry - clay will absorb moisture from the air - at
least wrap em up if you can't weigh em right away. No use wrapping them up
when they are wet - moisture will move from an area of high to an area of
low concentration.
How do I adjust clay bodies when the raw materials vary? - I look at the
test data to see if the body needs opening or tightening.
Like I said - not rocket science - but you do need reliable data and you
better know whats what if you want to take short cuts.
RR
>Your two points below are certainly possible. I think the primary
>reason is just to shorten the test. Transport phenomena are temperature
>dependent and the sample will become saturated more quickly in boiling
>water than in room temperature water. I personally think 30 minutes is
>too short. I do it for 2 hours, although I admit my data to prove that
>2 hours is better is sketchy.
>
>Regards,
>
>John
>On Friday, February 13, 2004, at 11:19 AM, Earl Krueger wrote:
>
>> Question:
>> Why does the protocol specify boiling for 30 minutes?
>>
>> Is the whole point of boiling to cause the air trapped
>> in the ceramic to expand and be forced out so it can
>> be replaced with water?
>>
>> or,
>>
>> Does the boiling dissolve the soluble components
>> which would otherwise be slowly dissolved over a
>> period of time once the ceramic was placed in use?
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
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