jvdb on tue 24 sep 02
Dear Mel,
What does mean: pounds only?
I imagine Nigel Wood made the
formula up in pounds.
But... am I wrong if I think that this doesn't make any difference in the
proportions?
And that there is no reason to make a complicated reconversion from pounds
to grams and back to percentages or whatever?
Right or wrong?
Many thanks,
Jeff
At 09:32 09/22/2002 -0500, you wrote:
>i...
>here is the nigel wood song glaze...repro:
>
>pounds only, cone 10
>
>talc 0.7
>wollastonite 6
>custer spar 5.5
>epk 2.8
>ball clay 2.8
>flint 4.4
>i use a grocery scale.
>makes a five gallon pail full.
>
>
Jeff van den Broeck
P.O.Box 1099, Baguio City 2600
Philippines
jvdb@skyinet.net
Ron Roy on thu 26 sep 02
In order to get this right we need to know - does 5.5 mean five and one
half pounds or does it meant 5 pounds 5 ounces.
RR
>Dear Mel,
>What does mean: pounds only?
>I imagine Nigel Wood made the
>formula up in pounds.
>But... am I wrong if I think that this doesn't make any difference in the
>proportions?
>And that there is no reason to make a complicated reconversion from pounds
>to grams and back to percentages or whatever?
>Right or wrong?
>Many thanks,
>Jeff
>
>At 09:32 09/22/2002 -0500, you wrote:
>>i...
>>here is the nigel wood song glaze...repro:
>>
>>pounds only, cone 10
>>
>>talc 0.7
>>wollastonite 6
>>custer spar 5.5
>>epk 2.8
>>ball clay 2.8
>>flint 4.4
>>i use a grocery scale.
>>makes a five gallon pail full.
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
jvdb on fri 27 sep 02
Dear Ron,
you're an attentive reader.
I solved the problem for myself and went to look up one of the books
written by Nigel Wood:
Oriental Glazes, Pitman 1978, p.62.
The recipe 'porcelain glaze' oxi or red 1240-1290C
reads (not in pounds, but percentage) as follows:
Potash feldspar 25
Wollastonite 27
China clay 12,5
BKS(H) ball clay 12,5
Flint 20
Talc 3
I made a little comparison and Mel's recipe is identic. So his 0,7 is not
7 ounces but 0,7 of a pound.
I have never seen a pound scale and didn't know it had a decimal subdivision.
Problem solved.
Greetings, Jeff
At 00:52 09/26/2002 -0500, you wrote:
>In order to get this right we need to know - does 5.5 mean five and one
>half pounds or does it meant 5 pounds 5 ounces.
>
>RR
>
>
>>Dear Mel,
>>What does mean: pounds only?
>>I imagine Nigel Wood made the
>>formula up in pounds.
>>
Jeff van den Broeck
P.O.Box 1099, Baguio City 2600
Philippines
jvdb@skyinet.net
| |
|
