Gabriel Tejeda on wed 2 jul 03
Hi everyone,
I saw on a home improvement tv channel a person using some crystals on a =
plain shiny glaze and the results was a crystal glaze look a like. So , =
does anyone know whether those crystals are just plain glass or a =
company makes it with a special formula. My problem is making a nice =
shiny deep burgandy color glaze that will work with a very porous stone =
ware body that it's almost impossible to get a pinhole free glaze on it. =
so maybe by creating some interest speckels in the glaze it it will =
camouflage the imperfections. Any sugestions?
Thankyou for your time.
Gabriel Tejeda
Paul Lewing on thu 3 jul 03
on 7/2/03 2:22 PM, Gabriel Tejeda at gabriel.tejeda@DAVIDBROOKS.COM wrote:
> I saw on a home improvement tv channel a person using some crystals on a =
> plain shiny glaze and the results was a crystal glaze lookalike. So , =
> does anyone know whether those crystals are just plain glass or a =
> company makes it with a special formula.
Hi, Gabriel. You wouldn't really mistake the effect produced this way for a
true zinc-based macrocrystaline glaze if you could compare the two, but I
know what you mean. Some commercial glaze companies sell what they refer to
as crystal glazes which are a liquid glaze of one color with chunks of
another color in it that usually settle to the bottom.
The chunks are essentially colored glass. Or more properly, they're a
colored glaze, fired high enough to fuse, then crushed to a certain size.
So I guess in a sense you could also call them lumps of colored frit.
You can make these yourself with a little work. You can take dried glaze,
chop it up to what ever size you like, fire it high enough to fuse it a
little but not high enough to melt it, and you have the same stuff. If you
want a certain size chunk, get two screens, one of a size to remove the
chunks that are bigger than you want, and another that will let pass all the
stuff that's finer than you want. To make the fired "crystals" really
diffuse into your base glaze rather than just make colored spots, make the
chunks out of a glaze that either melts at a much lower temperature than the
base glaze, or choose a glaze of the same maturing temperature that's very
different chemically from the base.
Happy testing,
Paul Lewing, Seattle
Tom Sawyer on thu 3 jul 03
Spectrum is selling small bottles of dry crystals that can be used with
other glazes. I tried a gold and white with Ron's black with interesting
results.
Tom Sawyer
tsawyer@cfl.rr.com
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG]On Behalf Of Gabriel
Tejeda
Sent: Wednesday, July 02, 2003 5:23 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: cyrstal glaze look a like?
Hi everyone,
I saw on a home improvement tv channel a person using some crystals on a
plain shiny glaze and the results was a crystal glaze look a like. So ,
does anyone know whether those crystals are just plain glass or a company
makes it with a special formula. My problem is making a nice shiny deep
burgandy color glaze that will work with a very porous stone ware body that
it's almost impossible to get a pinhole free glaze on it. so maybe by
creating some interest speckels in the glaze it it will camouflage the
imperfections. Any sugestions?
Thankyou for your time.
Gabriel Tejeda
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