Ron Collins on thu 15 nov 01
----- I got a recipe from the archives and it's consistently burgundy, with
pretty, lighter nuances where thick it is cone six ox. and has a very nice
smooth melt also. I don't happen to like the white clay body coming
through, and have not tried it layered over or under. It would be very nice
over dark or black slip. I think one thing to do is be as precise as
possible with your tin/chrome measurements. For small test batches of 100
grams, I measured 1.5 grams, then divided it into ten little piles and added
one. Probably there is a better way, but I hate to waste materials, so mix
100 g. test batches. Some people make much larger test batches than that,
and probably more accurate in terms of getting the same thing with a batch
recipe of 5-10 thousand grams. Anyway, here it is:
posted by liz dodge, Fri 17 oct, 1997
Red/PinK/Purple/Mauve
(but it's not, for me it's consistently burgundy and it's ugly if thin, so
put on thick)
Nepheline Syenite 16
Whiting 20
Gerstley B. 21
Kaolin I used epk 11
Silica I used 305m 32
Tin Oxide 5
Chrome oxide 0.15
Melinda Collins, Antigua Guatemala
Wade Blocker on thu 15 nov 01
Debbie,
Try adding 2 to 4 % of the Cerdec/ Degussa bordeaux red stain to your
favorite glaze. Mia in ABQ
Paul Lewing on thu 15 nov 01
Debbie,
You might search the archives for a recipe called Kemp Pink. It makes the
best chrome/tin pink I've come across. You say you've tested for this color
in several different recipes, but the chemistry has to be pretty specific to
get it. You need a lot of calcium, and I'm pretty sure you need a lot of
boron. And none of the Gerstley Borate substitutes I've tried make as nice
a color as good old GB, either substituting straight across or doing the
molecular reformulation thing. I must admit, however, I've only ever tested
it on a white clay body.
Happy further testing,
Paul Lewing, Seattle
Debbie Jestin on thu 15 nov 01
I've tried several different receipes for cone 6 ox, Pink and or purple
glazes and am having a problem, not getting the right color. On Laguna B mix
they all turn green and on Plainsman M332 they are almost purple. What I'm
looking for is an opaque dark pink to burgandy. I've mixed 5% rutile in the
test glaze, got a lovely floating mauve glaze,just the wrong color. I've
checked the archives and several books, the tin to chrome ratio appear to be
very close in all the ones I've tried. 5% tin and .15 - .35 chrome oxide Any
ideas on what I'm doing wrong?
Ababi on fri 16 nov 01
Hi!
You are not wrong. You have to understand what happens. I did not read
all your letter because I do not know what is Plainsman M332 or Laguna
B mix.
This glaze works this way. the zero point something chrome oxide paints
the tin. In certain base. I did not investigate that far.
Every glaze you make you must test in every claybody you might use.
This glaze I use has 7% tin and 0.325 chrome . Just think me and my
shaking hands! I can easily mistake and use 0.5 chrome, this way I will
get beautiful pastel like light green.
In one condition this glaze that has worked good, become green, I think
because the G.B. in it might of changed after a year.(It was the only
glaze, besides raku that I wrote the date I made it).
The next step:http://members.aol.com/goodrichdn/
Don has a download able list, my bible of glazes.
Search in this list for any glaze named plum, mauve, red, pink ETC.
If you have a problem to substitute the GB e mail me and I shall try to
help.
There is another mauve purple using barium, but it is tricky,as well as
poisonous so I do not send you now, If you want it anyway I shall send
you.
Ababi Sharon
Kibbutz Shoval- Israel
Glaze addict
sharon@shoval.org.il
http://members4.clubphoto.com/ababi306910/
http://www.milkywayceramics.com/cgallery/asharon.htm
http://www.israelceramics.org/
---------- Original Message ----------
>I've tried several different receipes for cone 6 ox, Pink and or purple
>glazes and am having a problem, not getting the right color. On Laguna
>B mix
>they all turn green and on Plainsman M332 they are almost purple. What
>I'm
>looking for is an opaque dark pink to burgandy. I've mixed 5% rutile
in
>the
>test glaze, got a lovely floating mauve glaze,just the wrong color.
I've
>checked the archives and several books, the tin to chrome ratio appear
>to be
>very close in all the ones I've tried. 5% tin and .15 - .35 chrome
>oxide Any
>ideas on what I'm doing wrong?
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