L. P. Skeen on tue 5 dec 06
LOL, thanks David. I guess I won't be too disappointed if I end up with
a blue Hake brush tho. ;)
L
David Hendley wrote:
> Food color will burn out of glazes and slips, but remember, Lisa,
> that unlike the usual colorants we work with, these things can
> stain your clothing and your counter if you spill it.
L. P. Skeen on tue 5 dec 06
Clear commercial glazes often have pink colorant added to them (I'm
guessing to differentiate them from the white glaze, so you can tell you
have a piece covered sufficiently.) If I make my own clear glaze and
add food color(I have blue, green and yellow), will it burn out at ^04?
Thanks
L
Dannon Rhudy on tue 5 dec 06
Yes, it will, Lisa.
At least, I had students do that, when they worked with
low fire glazes.
regards
Dannon Rhudy
Ann Brink on tue 5 dec 06
I have added both green and yellow, at different times, to my wax resist,
and never seen a trace of it later
Ann Brink in Lompoc CA
----- Original Message -----
From: "L. P. Skeen"
To:
Sent: Tuesday, December 05, 2006 1:48 PM
Subject: food color in glaze?
> Clear commercial glazes often have pink colorant added to them (I'm
> guessing to differentiate them from the white glaze, so you can tell you
> have a piece covered sufficiently.) If I make my own clear glaze and
> add food color(I have blue, green and yellow), will it burn out at ^04?
>
> Thanks
> L
>
> ______________________________________________________________________________
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Chip Richards on tue 5 dec 06
Wow, something I can actually answer, after lurking for months!
On Tue, Dec 05, 2006 at 04:48:17PM -0500, L. P. Skeen wrote:
> Clear commercial glazes often have pink colorant added to them (I'm
> guessing to differentiate them from the white glaze, so you can tell you
> have a piece covered sufficiently.)
Curiously enough, the white glazes are usually tinted pink too. But you're right, it's about coverage: when you glaze bare white earthenware bisque, it's often hard to see where you've covered and where not with a "plain white" glaze mixture.
> If I make my own clear glaze and add food color(I have blue, green and
> yellow), will it burn out at ^04?
It always has for me, from ^06 through ^5. I've used blue, green, yellow, and red food coloring, mixed in various proportions, and had no problems with any of them.
I usually color my low-fire clear with green to distinguish it from the pink commercial low-fire clear, which is leaded, and tint my mid-fire clear with blue, to distinguish it from the low-fire stuff. Labels on the glaze containers are all well and good, but after a piece is glazed and doesn't make it in for a few firings, I sometimes don't recognize it sitting on the shelf, and the colors help.
I use other food-color mixes for other glazes that would otherwise be white in their raw state. I'll also put it in an otherwise colored glaze, even a commercial one, if the color it was originally doesn't contrast enough with where I'm putting it.
--
Chip
David Hendley on tue 5 dec 06
Food color will burnout of glazes and slips, but remember, Lisa,
that unlike the usual colorants we work with, these things can
stain your clothing and your counter if you spill it. I added blue
food coloring to one of my slip glazes and it permanently
stained both the hair and wood of my slip brush.
David Hendley
Maydelle, Texas
david(at)farmpots(dot)com
http://www.farmpots.com
----- Original Message -----
> Clear commercial glazes often have pink colorant added to them (I'm
> guessing to differentiate them from the white glaze, so you can tell you
> have a piece covered sufficiently.) If I make my own clear glaze and
> add food color(I have blue, green and yellow), will it burn out at ^04?
L. P. Skeen on tue 5 dec 06
Chip, thanks for the information. I'll be using that blue food
coloring.....:)
Thanks
L
Chip Richards wrote:
>> If I make my own clear glaze and add food color(I have blue, green and
>> yellow), will it burn out at ^04?
>>
>
> It always has for me, from ^06 through ^5. I've used blue, green, yellow, and red food coloring, mixed in various proportions, and had no problems with any of them.
>
>
John Rodgers on wed 6 dec 06
Rit clothing dye can be used in plaster to make working with plaster a
little easier on the eyes.
No burning out necessary.
Food color in glaze is another matter. Should burn out OK.
Regards,
John Rodgers
Chelsea, AL
L. P. Skeen wrote:
> Clear commercial glazes often have pink colorant added to them (I'm
> guessing to differentiate them from the white glaze, so you can tell you
> have a piece covered sufficiently.) If I make my own clear glaze and
> add food color(I have blue, green and yellow), will it burn out at ^04?
>
> Thanks
> L
>
> ______________________________________________________________________________
>
> 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.
>
Russel Fouts on thu 7 dec 06
David,
>> Food color will burnout of glazes and slips, but remember, Lisa,
that unlike the usual colorants we work with, these things can stain
your clothing and your counter if you spill it. I added blue food
coloring to one of my slip glazes and it permanently stained both the
hair and wood of my slip brush. <<
Red iron oxide doesn't stain anything it touches? ;-)
Ru
sacredclay on sun 10 dec 06
A couple of drops of red food coloring in wax resist makes it easier
to see when brushing it on white clay. Kathryn--- In
clayart@yahoogroups.com, John Rodgers wrote:
>
> Rit clothing dye can be used in plaster to make working with
plaster a
> little easier on the eyes.
> No burning out necessary.
>
> Food color in glaze is another matter. Should burn out OK.
>
> Regards,
>
> John Rodgers
> Chelsea, AL
>
> L. P. Skeen wrote:
> > Clear commercial glazes often have pink colorant added to them
(I'm
> > guessing to differentiate them from the white glaze, so you can
tell you
> > have a piece covered sufficiently.) If I make my own clear glaze
and
> > add food color(I have blue, green and yellow), will it burn out
at ^04?
> >
> > Thanks
> > L
> >
> >
______________________________________________________________________
________
> >
> > Send postings to clayart@...
> >
> > 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@...
> >
>
>
______________________________________________________________________
________
> Send postings to clayart@...
>
> You may look at the archives for the list or change your
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> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@...
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