John Rodgers on thu 1 may 03
Just mixed a new batch of floating blue, and can't for the life of me
find my notes on the stuff ........nor remember the specific gravity or
density that is best. I don't like the use of subjective descriptions
such as "apply thick" or "apply thin" I like a little more scientific
and definitive than that. How about " dip and hold for 30 seconds in
glaze adjusted to a density of 1.53. Now that tells me something.
So, does anyone have any recommendations for Floating Blue.?
Thanks,
John Rodgers
Birmingham, AL
Christena Schafale on fri 2 may 03
I always found 1.45 to work well with the original recipe.
Chris
At 11:04 PM 05/01/2003 -0600, you wrote:
>Just mixed a new batch of floating blue, and can't for the life of me
>find my notes on the stuff ........nor remember the specific gravity or
>density that is best. I don't like the use of subjective descriptions
>such as "apply thick" or "apply thin" I like a little more scientific
>and definitive than that. How about " dip and hold for 30 seconds in
>glaze adjusted to a density of 1.53. Now that tells me something.
>
>So, does anyone have any recommendations for Floating Blue.?
>
>Thanks,
>
>John Rodgers
>Birmingham, AL
>
>______________________________________________________________________________
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Consultation and Referral Specialist
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Edouard Bastarache on fri 2 may 03
Hello John,
Tony Hansen on his site says to apply it the thickness of a dime.
Later,
"Ils sont fous ces Quebecois"
Edouard Bastarache
Irreductible Quebecois
Indomitable Quebeker
Sorel-Tracy
Quebec
edouardb@sorel-tracy.qc.ca
http://sorel-tracy.qc.ca/~edouardb/
http://perso.wanadoo.fr/smart2000/index.htm
John Rodgers on sun 4 may 03
In answer to my own question, and to inform everyone about my Floating
Blue, I adjusted the density to 1.5 and completely immersed each bisque
piece (B-Mix ^5) for 15 seconds. The firing went well.
Fired to cone 5 (free standing shelf cone). Firing took 10 hours.
Color: As usual for me with this glaze, the colors turned out
beautiful. My current work is a combination of brown and blue work, and
this glaze allows me to get both colors with the same glaze. I first
competely immerse the piece, then sponge clean those areas where I need
to have brown appear. I may or may not re-apply with a brush glaze to
get the brown color just right for my purposes.
Mechanical:
There were no pinholes, but the glaze showed evicence of movement on
some pots. and on two the glaze rolled up around the foot as if ready to
start glaze runs off the bisque. On one pot the glaze actually did run,
and it ran evenly all the way around on the foot, sticking the pot to
the shelf.
Temperature:
I fired the kiln to a cone 5 using free standing Norton cones with
visual sighting in conjunction with a pyrometer to determine when the
cone was down. My kiln is a really ancient Crusader Cone 10 kiln with no
controls except infinity switches. Thus the need to visually observe
maturity by looking at the cones. With this combination of Floating
Blue on ^5 B-mix, I fire to a point where the cone is bent horizontal.
However, for whatever reason, this time I hesitated and allowed the cone
to go to 47 degrees beyond horizontal, and the consequence was some
small excess movement of the glaze, so much so that glaze ran on one pot.
Comments: I find this glaze to be very tempermental, but if all the
parameters are carefully controlled, there can be consistency from one
firing to the next, one glaze batch to the next.
I do like the glaze and it is a main staple on my glaze palette.
John Rodgers
Birmingham, AL
John Rodgers wrote:
> Just mixed a new batch of floating blue, and can't for the life of me
> find my notes on the stuff ........nor remember the specific gravity or
> density that is best. I don't like the use of subjective descriptions
> such as "apply thick" or "apply thin" I like a little more scientific
> and definitive than that. How about " dip and hold for 30 seconds in
> glaze adjusted to a density of 1.53. Now that tells me something.
>
> So, does anyone have any recommendations for Floating Blue.?
>
> Thanks,
>
> John Rodgers
> Birmingham, AL
>
> ______________________________________________________________________________
>
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
>
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