Bjerkan on fri 29 jan 99
Hi... I''m wondering why the Amaco velvets sometimes flake off after bisque
firing=21? Actually some of my own underglaze mixes have started doing this
occasionally also. What am I doing wrong?? I have been airbrushing two =
fairly
heavy coats on greenware and firing to 05. Help=21=21=21 Peggy in the crisp=
and sunny
Napa Valley
joe & lisa cecere on sat 30 jan 99
I also had that problem, when the underglaze is painted on completly dry
greenware, sometimes it would flake up and over after I glazed. I fixed the
flaking or spitting by adding water to the first coat to thin the underglaze
down, or you could spray a light coat of water onto the piece before you
start applying the underglaze. It seems that the problem occurs if you
brush on to thick of a coat onto very wet clay or too dry...so you have to
find the happy medium. Good Luck! Lisa K.C.
-----Original Message-----
From: Bjerkan
To: CLAYART@LSV.UKY.EDU
Date: Friday, January 29, 1999 6:23 AM
Subject: Flaking underglazes
>----------------------------Original message----------------------------
>Hi... I''m wondering why the Amaco velvets sometimes flake off after bisque
>firing!? Actually some of my own underglaze mixes have started doing this
>occasionally also. What am I doing wrong?? I have been airbrushing two
fairly
>heavy coats on greenware and firing to 05. Help!!! Peggy in the crisp and
sunny
>Napa Valley
>
Cathy Harris on sat 30 jan 99
If you put underglazes on (velvets - Amaco) too thick, they will flake. You
can water down the underglazes and put on 3-4 even coats and get beautiful
results! I also fire to Cone 6 oxidation using underglazes all the time
and have NEVER had any flaking. I use Tucker's MCS clay body. That may
make a difference. Good luck.
----------
> ----------------------------Original message----------------------------
> I also had that problem, when the underglaze is painted on completly dry
> greenware, sometimes it would flake up and over after I glazed. I fixed
the
> flaking or spitting by adding water to the first coat to thin the
underglaze
> down, or you could spray a light coat of water onto the piece before you
> start applying the underglaze. It seems that the problem occurs if you
> brush on to thick of a coat onto very wet clay or too dry...so you have to
> find the happy medium. Good Luck! Lisa K.C.
> -----Original Message-----
> From: Bjerkan
> To: CLAYART@LSV.UKY.EDU
> Date: Friday, January 29, 1999 6:23 AM
> Subject: Flaking underglazes
>
>
> >----------------------------Original message----------------------------
> >Hi... I''m wondering why the Amaco velvets sometimes flake off after
bisque
> >firing!? Actually some of my own underglaze mixes have started doing this
> >occasionally also. What am I doing wrong?? I have been airbrushing two
> fairly
> >heavy coats on greenware and firing to 05. Help!!! Peggy in the crisp
and
> sunny
> >Napa Valley
> >
>
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