joyce on fri 16 nov 07
>Hi Kris,
>
>Probably delayed crazing - it may be fixable - do you have any spodumene?
>
>Send me the recipes and I'll see what I can do. The good news is - if they
>ring when they come out of the kiln they probably don't need much of a
>change.
>
>RR
>
>
>
> > greetings from snowy snowy anchorage!!
> >
> > i have a puzzlement and hope someone
> > can help.
> >
> > we are using baileys red from john britts book
> > and millring red from last months cm.
> > over laguna b mix fired to cone 10 down and cone
> > 11 soft to 1/4. reduction. oh, it's cold out now
> > and i think the kiln is cooling fast at the
> > top temp.
> >
> > and although we are thrilled with the look, when it
> > comes out of the kiln we get a beautiful RING ,
> > however, rinse it or wash (add water) and the
> > ring goes away,thunk.
> >
> > hmm what's wrong? is this normal? fit problem?
> >
> >
> > whatever could be the problem?
> >
> > i appreciate your contemplation of my problem
> > and any comments are welcome.
> >
> > tia,
> > bliss
>
>Ron Roy
>RR#4
>15084 Little Lake Road
>Brighton, Ontario
>Canada
>K0K 1H0
Kris Bliss on fri 16 nov 07
hi ron,
i looked for your e-mail address but nooo.
thank you so much for looking into this problem.
i am using ^10 b mix and usually pretty heavy reduction.
fire to 11.
baileys red
custer 47
400 mesh silica 13
grolleg 13
talc 10.5
bone ash 14
lith.carb 2.5
rio 8
there you go ,
and i do have spodumene on hand.
thank you, thank you !
and i think we are going to drop the millring after hearing
it's not foodsafe... we do too much domestic ware.
we got a test out today the baileys likes the old
peach black.. and over my rutile base (lip dip) very nice.
____________________________________________________________________________
__
Ron Roy on mon 19 nov 07
Hi Kris,
Try this and also this half and half with your original - I've lowered the
expansion a lot so you should to the test for shivering - freeze for 24
hours - if not cracked pour in boiling water while still frozen - in the
sink in case it cracks. Better not do that till it has been out of the kiln
for a few day to see if it rings.
-----------------
CUSTER SPAR......... 11.00
AUSI SPOD........... 26.00
SILICA.............. 23.00
Grolleg............. 12.50
TALC................ 11.00
BONE ASH............ 14.50
LITH CARB........... 2.00
=RED IRON OX......... 8.00
----------
108.00
FORMULA & ANALYSIS
------------------
*CaO........ .43
MnO2....... .00
*Li2O....... .26
*MgO........ .24
*K2O........ .04
*Na2O....... .02
Fe2O3...... .14
TIO2....... .00
AL2O3...... .37
SiO2....... 2.76
P2O5....... .12
RATIO 7.46 (Original is 7.53)
EXPAN 416.38 (Original is 574.12)
WEIGHT 290.32
It may need some adjustments - watch out for running till you are sure it's
behaving.
RR
>hi ron,
>i looked for your e-mail address but nooo.
>
>thank you so much for looking into this problem.
>
>i am using ^10 b mix and usually pretty heavy reduction.
>fire to 11.
>
>baileys red
>custer 47
>400 mesh silica 13
>grolleg 13
>talc 10.5
>bone ash 14
>lith.carb 2.5
>
>rio 8
>
>there you go ,
>and i do have spodumene on hand.
>
>thank you, thank you !
>
>and i think we are going to drop the millring after hearing
>it's not foodsafe... we do too much domestic ware.
>
>we got a test out today the baileys likes the old
>peach black.. and over my rutile base (lip dip) very nice.
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Kris Bliss on tue 20 nov 07
hi ron,
thank you so much ,
we won't be firing for a while,we are into winter
slow down. (thank goodness).
but when we do the next fire, i'll post the results
of both.
and thank you for the info about shivering,
but wouldn't pouring boiling water on a frozen
pot break it anyway?
thank you again
kris bliss
Ron Roy on thu 22 nov 07
Hi Kris,
Any mug should be able to take boiling water for starters - having the clay
frozen just makes for a more definative test.
Yes many potters have used this test - if your ware breaks during it you
can assume the liner glazes has too low an expansion.
RR
>hi ron,
>thank you so much ,
>we won't be firing for a while,we are into winter
>slow down. (thank goodness).
>but when we do the next fire, i'll post the results
>of both.
>
>and thank you for the info about shivering,
>but wouldn't pouring boiling water on a frozen
>pot break it anyway?
>
>thank you again
>kris bliss
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
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