Ababi Sharon on fri 8 dec 00
Frit NR 169
=================
BaO....0.12
CaO....0.09
Na2O..0.64
ZnO....0.15.
Al2O3..0.1
B2O3..0.85
SiO2..1.21
Ababi
----- Original Message -----
From: "Alisa and Claus Clausen"
To:
Sent: Friday, December 08, 2000 12:37 PM
Subject: Frit used in Ron Roy's satin matt clear
I forgot the type of frit...
It calls for 3134, but I use my local frit, which Ababy showed me
looks nothing like the above, but it works for me! Clear,
not too shiny glaze. One of my heros in the studio.
Best regards,
Alisa in Denmark
-----Oprindelig meddelelse-----
Fra: Clay Grigsby
Til: CLAYART@LSV.CERAMICS.ORG
Dato: 7. december 2000 20:52
Emne: Re: Sv: satin clear???
Alisa:
In Ron Roy's satin clear what frit did you use?
Thanks, Clay
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David Hendley on fri 8 dec 00
Alisa in Denmark says.......
>I am satisfied with this glaze, so as far as "As the Wheel Turns", will we
ever find a
>good cone 6 clear? David, cancel the show for the next season, the glaze
has been
>found at least in one studio.
The show will not be cancelled,
'Will we ever find a good cone 6 clear?' is just being
replaced with 'I'm being taken for granted'.
Watch out, Dear Abby and Dr. Laura.
--
David Hendley
Maydelle, Texas
hendley@tyler.net
http://www.farmpots.com/
----- Original Message -----
From: Alisa and Claus Clausen
To:
Sent: Friday, December 08, 2000 2:25 PM
Subject: Sv: Frit NR 169 Or: A mysteries frit from Denemark
Interesting and likeable about this frit for me is that it tends to smooth
out glazes, although
sometimes it does make them glossier than the original receipe. I have
recently tested numerous
receipes that call for G.B, with this frit as sub, mostly in the glazes
where colemanite
sub. failed (made glazes too dry or matt). This frit melts at 700c and is
listed as a
raku frit, as Ivor correctly observed when seeing the analysis.
I just unpacked a kiln with this frit used in Ron Roy's satin matt.
Everytime
I use that glaze and it works like it does for me tonight, I say many thank
yous
to Ron. The satin matt is semi gloss than can go all gloss if fired to
high,
but usually, like today, has the exact surface I want, a clear semi gloss.
I say semi gloss, not semi mat, because it leans more to a gloss with some
shine,
but not glassy. In the firings I have made, I have seen this glaze as a
true transparent
matt with some milkiness if really a heavy drip or overlap, to what I have
today 70/30 mat/gloss,
to a shiny gloss when the kiln fires hot.
I am satisfied with this glaze, so as far as "As the Wheel Turns", will we
ever find a
good cone 6 clear? David, cancel the show for the next season, the glaze has
been
found at least in one studio.
Best regards,
Alisa in Denmark
>Frit NR 169
>=================
>BaO....0.12
>CaO....0.09
>Na2O..0.64
>ZnO....0.15.
>Al2O3..0.1
>B2O3..0.85
>SiO2..1.21
>
>Ababi
>
Ababi Sharon on sat 9 dec 00
> Watch out, Dear Abby and Dr. Laura.
> --
> David Hendley
What?
Did I miss anything? That frit exist only in my Insight program.
Does anyone look for ^6 clear glazes?
Ababi Sharon
ababisharon@hotmail.com
http://www.milkywayceramics.com/cgallery/asharon.htm
http://www.israelceramics.org/index.html
* * * * * * * *
www.photoisland.com
ID: sharon@shoval.org.il
Password:clay
Ron Roy on tue 12 dec 00
Hi Alisa,
I have worked out the analysis for this frit so others can duplicate your
results (if they have calculators) with other materials and frits.
There is quite a difference in the fluxes between frit 3134 and your 169
but when I sub it equal amounts in a glaze calling for 20 frit 3134 the
results are similar. Looks like it will melt about the same temp but has
more boron and sodium so I am not surprised to see the extra melt with some
glazes. Alumina and silica are similar.
When I sub it in for a glaze with 20% GB the alumina and boron are the same.
So I now understand why you are getting similar results with this frit.
Using calculation software I can get much closer in terms of ratio and
expansion by adding some MgO and reducing the KNaO (reducing the feldspar)
and then getting the alumina and silica the same - in fact I am surprised
how close I can get them.
Frit NR 169 % worked out by RR
BaO - 9.01
CaO - 2.47
Na2O - 18.9
ZnO - 5.83
B2O3 - 28.27
Al2O3 - 0.71
SiO2 - 34.81
Total - 100.0
Experimental C6 glaze to show substitution with NR 169 for GB
-----------------
Gers Borate 9/97.... 20.00
WOLAST.............. 5.00
DOLOMITE............ 15.00
G 200 SPAR.......... 25.00
EPK................. 15.00
SILICA.............. 20.00
----------
Total.................. 100.00
FORMULA & ANALYSIS
------------------
*CaO........ .55 ------ 12.81%
*MgO........ .28 ------ 4.77%
*K2O........ .09 ------ 3.55%
*Na2O....... .08 ------ 1.94%
Fe2O3...... .01 ------ .35%
TIO2....... .00 ------ .05%
B2O3....... .23 ------ 6.54%
AL2O3...... .30 ------ 12.65%
SiO2....... 2.30 ------ 57.32%
P2O5....... .00 ------ .02%
RATIO 7.70
EXPAN 457.21
WEIGHT 240.59
Same glaze with Frit NR 169 - note ratio, expansion and mol weight.
-----------------
Frit NR 169......... 20.00
WOLAST.............. 6.00
DOLOMITE............ 19.00
G 200 SPAR.......... 4.00
EPK................. 26.00
SILICA.............. 25.00
----------
Total .....................100.00
FORMULA & ANALYSIS
------------------
*BaO........ .03 ------ 2.06% <<<< new oxide
*CaO........ .45 ------ 10.39%
*MgO........ .28 ------ 4.66%
*K2O........ .02 ------ 0.62%
*Na2O....... .18 ------ 4.51%
*ZnO........ .04 ------ 1.33% <<<< new oxide
Fe2O3...... .00 ------ .32%
TIO2....... .00 ------ .09%
B2O3....... .23 ------ 6.47%
AL2O3...... .30 ------ 12.43%
SiO2....... 2.32 ------ 57.08%
P2O5....... .00 ------ .04%
RATIO 7.81
EXPAN 448.67
WEIGHT 243.87
If you want me to do this with a glaze that has F3134 just sent one to me.
RR
>Interesting and likeable about this frit for me is that it tends to smooth
>out glazes, although
>sometimes it does make them glossier than the original receipe. I have
>recently tested numerous
>receipes that call for G.B, with this frit as sub, mostly in the glazes
>where colemanite
>sub. failed (made glazes too dry or matt). This frit melts at 700c and is
>listed as a
>raku frit, as Ivor correctly observed when seeing the analysis.
>
>I just unpacked a kiln with this frit used in Ron Roy's satin matt. Everytime
>I use that glaze and it works like it does for me tonight, I say many
>thank yous
>to Ron. The satin matt is semi gloss than can go all gloss if fired to high,
>but usually, like today, has the exact surface I want, a clear semi gloss.
>I say semi gloss, not semi mat, because it leans more to a gloss with some
>shine,
>but not glassy. In the firings I have made, I have seen this glaze as a
>true transparent
>matt with some milkiness if really a heavy drip or overlap, to what I have
>today 70/30 mat/gloss,
>to a shiny gloss when the kiln fires hot.
>
>I am satisfied with this glaze, so as far as "As the Wheel Turns", will we
>ever find a
>good cone 6 clear? David, cancel the show for the next season, the glaze
>has been
>found at least in one studio.
>
>Best regards,
>Alisa in Denmark
>>Frit NR 169 (this is a molecular formula for this frit - oxides in unity
>>should be marked so - ie *BaO - RR)
>>=================
>>BaO....0.12 <>>CaO....0.09 <>>Na2O..0.64 <>>ZnO....0.15 <>>Al2O3..0.1
>>B2O3..0.85
>>SiO2..1.21
>>
>>Ababi
>>
>>----- Original Message -----
>>From: "Alisa and Claus Clausen"
>>To:
>>Sent: Friday, December 08, 2000 12:37 PM
>>Subject: Frit used in Ron Roy's satin matt clear
>>
>>
>>I forgot the type of frit...
>>It calls for 3134, but I use my local frit, which Ababy showed me
>>looks nothing like the above, but it works for me! Clear,
>>not too shiny glaze. One of my heros in the studio.
Ron Roy
93 Pegasus Trail
Scarborough
Ontario, Canada
M1G 3N8
Evenings 416-439-2621
Fax 416-438-7849
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