Rimas VisGirda on wed 28 sep 11
I had cc'd this to clayart, but got a failure notice. Not sure why so sendi=
ng it again just to clayart... -Rimas
----- Forwarded Message -----
From: Rimas VisGirda
To: Dina Barnese
Cc: clayart post
Sent: Wednesday, September 28, 2011 7:54 AM
Subject: Clarification: Candle in electric kiln?
Here's the regimen I used for student bisques when I was teaching:
Ware should feel dry
bottom peep OUT, top peep OUT, door AJAR 2 inches
all switches on LOW
hold for 2 hrs
bottom peep IN, top peep OUT, door AJAR 2 inches
all switches on LOW
hold for 1 hr
bottom peep IN, top peep OUT, door CLOSED
all switches on LOW
hold for 1/2 hr
bottom peep IN, top peep OUT, door CLOSED
all switches on MED
hold for 1/2 hr
bottom peep IN, top peep OUT, door CLOSED
all switches on HIGH
Note that the top peep remains out for the entire firing. The all switches =
to MED step can be eliminated; I kept it in because it maintained a sort of=
rhythm that I find pleasing... -Rimas
paul gerhold on thu 29 sep 11
Rimas
Notice that you never put a plug in top peephole. This is what my kiln
manuals all recommend but in my experience you get a more even and faster
firing putting the top peephole plug in. Been doing it for 30 years and al=
l
my kilns with no problems.
Maybe Arnold or some expert could explain.
Paul
On Wed, Sep 28, 2011 at 9:07 AM, Rimas VisGirda wrote:
> I had cc'd this to clayart, but got a failure notice. Not sure why so
> sending it again just to clayart... -Rimas
>
>
> ----- Forwarded Message -----
> From: Rimas VisGirda
> To: Dina Barnese
> Cc: clayart post
> Sent: Wednesday, September 28, 2011 7:54 AM
> Subject: Clarification: Candle in electric kiln?
>
> Here's the regimen I used for student bisques when I was teaching:
>
> Ware should feel dry
>
> bottom peep OUT, top peep OUT, door AJAR 2 inches
> all switches on LOW
>
> hold for 2 hrs
>
> bottom peep IN, top peep OUT, door AJAR 2 inches
> all switches on LOW
>
> hold for 1 hr
>
> bottom peep IN, top peep OUT, door CLOSED
> all switches on LOW
> hold for 1/2 hr
>
> bottom peep IN, top peep OUT, door CLOSED
> all switches on MED
> hold for 1/2 hr
>
> bottom peep IN, top peep OUT, door CLOSED
> all switches on HIGH
>
> Note that the top peep remains out for the entire firing. The all switche=
s
> to MED step can be eliminated; I kept it in because it maintained a sort =
of
> rhythm that I find pleasing... -Rimas
>
Rimas VisGirda on thu 29 sep 11
When I was teaching we primarily used the electric for bisquing and leaving=
=3D
the plug out just provided a larger hole for organics and chemical water v=
=3D
apor to escape. In my work I use a lot of wax and the open peep allowed the=
=3D
burning wax to get out. The stoneware that we were using was 1/3 Goldart t=
=3D
hat gave off a lot of sulfur. The procedure was to load the bisque and only=
=3D
go to the kiln room to make an adjustment, most of the gaseous effluent wa=
=3D
s expelled after the final adjustment and the open peep just facilitated th=
=3D
e sulfur and burning wax fumes to get out; the kiln room did have an exhaus=
=3D
t system but it was not sufficient to keep the air clear... For the undergl=
=3D
aze unit we fired to 05 after burning the sulfur residue out of the kiln. I=
=3D
never saw any appreciable difference in results from top to bottom... The =
=3D
electrics in my studio are computerized and vented so the plug stays in and=
=3D
the difference from top to bottom, for my purposes, is negligible.
For a bisque, I ramp 180 to 180 hold for 2 hrs and then ramp 500 to 1900..=
=3D
. I used to ramp 999 but found that some computers, I forget which brand, g=
=3D
et confused and shut down; I think has something to do with 9999 of the ala=
=3D
rm code... -Rimas=3D0A=3D0A________________________________=3D0ARimas=3D0A=
=3D0A=3D0ANot=3D
ice that you never put a plug in top peephole.=3DA0 This is what my kiln ma=
nu=3D
als all recommend but in my experience you get a more even and faster firin=
=3D
g putting the top peephole plug in.=3DA0 Been doing it for 30 years and all=
m=3D
y kilns with no problems.=3D0A=3D0AMaybe Arnold or some expert could explai=
n.=3D
=3D0A=3D0APaul=3D0A=3D0A=3D0AOn Wed, Sep 28, 2011 at 9:07 AM, Rimas VisGird=
a @yahoo.com> wrote:=3D0A=3D0AI had cc'd this to clayart, but got a failure n=
otic=3D
e. Not sure why so sending it again just to clayart... -Rimas=3D0A>=3D0A>=
=3D0A>--=3D
--- Forwarded Message -----=3D0A>From: Rimas VisGirda =
=3D0A>=3D
To: Dina Barnese =3D0A>Cc: clayart post .c=3D
eramics.org>=3D0A>Sent: Wednesday, September 28, 2011 7:54 AM=3D0A>Subject:=
Cla=3D
rification: Candle in electric kiln?=3D0A>=3D0A>Here's the regimen I used f=
or s=3D
tudent bisques when I was teaching:=3D0A>=3D0A>Ware should feel dry=3D0A>=
=3D0A>bott=3D
om peep OUT, top peep OUT, door AJAR 2 inches=3D0A>all switches on LOW=3D0A=
>=3D0A=3D
>hold for 2 hrs=3D0A>=3D0A>bottom peep IN, top peep OUT, door AJAR 2 inches=
=3D0A>=3D
all switches on LOW=3D0A>=3D0A>hold for 1 hr=3D0A>=3D0A>bottom peep IN, top=
peep OU=3D
T, door CLOSED=3D0A>all switches on LOW=3D0A>hold for 1/2 hr=3D0A>=3D0A>bot=
tom peep=3D
IN, top peep OUT, door CLOSED=3D0A>all switches on MED=3D0A>hold for 1/2 h=
r=3D0A=3D
>=3D0A>bottom peep IN, top peep OUT, door CLOSED=3D0A>all switches on HIGH=
=3D0A>=3D
=3D0A>Note that the top peep remains out for the entire firing. The all swi=
tc=3D
hes to MED step can be eliminated; I kept it in because it maintained a sor=
=3D
t of rhythm that I find pleasing... -Rimas=3D0A>
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