Ron Roy on sun 9 aug 09
Thanks a lot Carol,
Here is a version of that same glaze with OM#4 instead of EPK - and with th=
e
expansion lowered a bit more.
12.50 WHITING
29.00 OM-4
9.00 NEPH SY
24.50 F3134
25.00 SILICA
0.76* CaO
0.01* MgO
0.03* K2O
0.20* Na2O
0.01 Fe2O3
0.02 TiO2
0.29 B2O3
0.36 Al2O3
3.43 SiO2
Si:Al: 9.62
SiB:Al: 10.43
Thermal Expansion: 421.31
Formula Weight: 322.95
RR
On Mon, Aug 3, 2009 at 2:30 PM, Carol Baker Cotton wrot=
e:
> Linda,
>
> I will share a ^6 oxidation glaze for B-mix that Ron Roy reformulated fo=
r
> me years ago. It has withstood years of use in the dishwasher, works wel=
l
> over underglazes, and has never crazed. As to the ^6 porcelain we would
> need to know what kind and the COE....and I assume you are doing oxidatio=
n.
>
> Some advice...meant kindly...because a few years ago I was a beginner...a=
rt
> degree but no ceramics. Many people on this list have helped me. I don'=
t
> think I am a beginner any longer...Ron are you listening? Buy RR's and
> John
> Hesselberth's book Mastering Cone 6 Glazes, get Michael Bailey's Cone 6
> Glazes, and maybe Jeff Zamek's What Every Potter Needs to Know because it
> explains substitutions. Then get glaze calculation software. I use
> Glazemaster because it is cheap and easy for a beginner to learn. Then y=
ou
> will never have crazing problems again. These will be the best investmen=
ts
> you will ever make. The basics and inexpensive....then you can get the
> other 1000 ceramic books.
>
> As to mixing glazes, almost any ceramic book from your library will expla=
in
> that for you. One that I just pulled from my library is Mark Burleson's
> the
> Ceramic Glaze Handbook...simple to follow...even has pictures. Also
> search
> the Clayart archives for info on mixing and fixing crazing.
>
> As for the COE...Google the company that makes your clay. Most have that
> info online.
>
> Ron Roy's Cone 6 Oxidation Clear
> Whiting 12.5
> EPK..Kaolin 19.5
> Neph Syenite 13.0
> Frit 3134 25.0
> Silica 30.0
> ____
> 100.00
>
>
> I am sure someone will type out the glaze mixing directions for you onlin=
e.
> If not, email me off Clayart and I can help you with that later.
>
> Good Luck....you'll get lots of info right here on Clayart
>
> Carol Baker Cotton
> Scottsdale, Arizona
> http://carolbakercotton.blogspot.com/
>
>
> ----- Original Message -----
> From: "Linda Mccaleb"
> To:
> Sent: Sunday, August 02, 2009 10:19 PM
> Subject: clear glaze
>
>
> Hello clayfolk,
> I was wondering if any one has a recipe for clear glaze for stoneware, no
> name, B-Mix, and cone 6 porcelain, the B-Mix is cone 6 too. I have had a
> problem with some of my glazes not matching COEs. I have had some crazing=
,
> wich is fine with me for colored glazes, and some pinging. But I have som=
e
> customers that want some porcelain that is sutibile to china paint on.
> Crazing is out of the question with these pieces. I have left a message
> with
> Kentuckey Mudworks, wich is where I bought the porcelain to see what COE =
it
> is. I don't know if they can give me that information.. I haven't mixed m=
y
> own glazes before, and don't know how to adjust for the crazing or the
> crawling if that happens. I wrote in about pinging before, but I have
> commercial glazes and I just had to learn to live with it. But now with t=
he
> porcelain for the china painters, I need to know how to adjust for it.
> This will be the first time I will mix my own glaze, so please be detaile=
d.
> I also need to know what screen to sieve it through.
> Any information you can give me on this will be greatly appreatiated!
> Thanks again,
> Linda McCaleb
> "Linda's Earth and Glass"
> No
>
--
Ron Roy
15084 Little Lake Road
Brighton, Ontario, Canada
K0K 1H0
| |
|
