CNW on wed 2 feb 00
Ron- one other question now that you have gotten yourself into this. As I
look at Kathy's glaze in the book I notice that she adds 15 percent ferro
3134 if she wants to bring this glaze down to a cone 3 from a cone 6. Would
that make a difference in the expansion?
Kathy's Original #4 cone 6 ox
Dolomite 13
Wollastonite 22
Neph Sye 43
Kaolin 22
----------------------
100 ---see I did it this time--I admit to being a math non-
believer though. ( 'nother story)
plus 15% frit 3134
I sometimes use the same claybody that she uses so I am doing tests using
both your revision and her original in case it is a case of a quirky clay.
Ron's revision
Dolomite 17
wollastonite 18
neph sye 31
silica 8
epk 26
-----------
total 100
I just did some tests of mat and semi matt glazes on a new clay body
(kickwheels raven black) at cone 5 (probably closer to a cone 6) and they
all came out glossy as all get out even the one that I just threw together
with lots of unwashed ash. I think the body is effecting it alot but nothing
ran at least. I am going to do some more tests at varying tempratures.
Celia- rambling again
Ron Roy on sat 5 feb 00
Hi Celia,
I don't have much time right now - adding that frit will raise the
expansion but I think you should try adding the 15% 3134 and see if
it works. If not send the whole story to me after I get home in a
week.
RR
>----------------------------Original message----------------------------
>Ron- one other question now that you have gotten yourself into this. As I
>look at Kathy's glaze in the book I notice that she adds 15 percent ferro
>3134 if she wants to bring this glaze down to a cone 3 from a cone 6. Would
>that make a difference in the expansion?
>
>Kathy's Original #4 cone 6 ox
> Dolomite 13
>Wollastonite 22
>Neph Sye 43
>Kaolin 22
>----------------------
> 100 ---see I did it this time--I admit to being a math non-
>believer though. ( 'nother story)
>plus 15% frit 3134
>
>I sometimes use the same claybody that she uses so I am doing tests using
>both your revision and her original in case it is a case of a quirky clay.
>
>Ron's revision
>
>Dolomite 17
>wollastonite 18
>neph sye 31
>silica 8
>epk 26
>-----------
>total 100
>
>I just did some tests of mat and semi matt glazes on a new clay body
>(kickwheels raven black) at cone 5 (probably closer to a cone 6) and they
>all came out glossy as all get out even the one that I just threw together
>with lots of unwashed ash. I think the body is effecting it alot but nothing
>ran at least. I am going to do some more tests at varying tempratures.
>
>Celia- rambling again
Ron Roy
93 Pegasus Trail,
Scarborough, Ontario
Canada. M1G 3N8
Tel: 416-439-2621
Fax: 416-438-7849
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