Mercy Langford on mon 6 may 02
I've always used the triangle cones from orton but this week while buying
supplies at a ceramic shop my husband noticed the rectangle shaped ones. He
insists that the rectangular ones should be more exact beccause it will
always bend at the same point versus the triangle bending depends how you
place it and that the bending point can be different all the time. I was
wondering what you all thought. Since I am a creature of habit I'm sticking
to my traingles untill I hear your thoughts. Mercy
Snail Scott on mon 6 may 02
At 06:08 PM 5/6/02 EDT, you wrote:
>I've always used the triangle cones from orton but this week while buying
>supplies at a ceramic shop my husband noticed the rectangle shaped ones. He
>insists that the rectangular ones should be more exact beccause it will
>always bend at the same point versus the triangle bending depends how you
>place it and that the bending point can be different all the time.
Yes, this is true. The Bell sitter 'bars' have
the advantage of consistency; the Orton sitter
cones have the advantage of flexibility. You
can set the cone into the sitter at different
positions and get slight variations in the
firing temperature.
A 'feature'? or a 'bug'? All depends on what
you want! ;)
Personally, nothing I fire is fussy enough for
it to matter much. Variables like load density
have a greater effect on my firings that the
precise position of the sitter cone. I use both
sorts of sitter cones, depending on where and
when I bought them, mostly. My witness cones
are always the same, so who cares what's in
the sitter as a failsafe?
-Snail
Frederich, Tim on tue 7 may 02
To all,
Bell does not make nor do they distribute bars and cones any more. We have
made their bars and cones for the last 5-6 years and in 2001 they decided to
no longer sell these type of products. The bars and cones are basically the
same except that you can use the cone to shorten or lengthen a firing to a
small degree by moving the cone position on the prongs of the KilnSitter.
Best regards,
Tim Frederich, Orton Ceramic Foundation
--Original Message-----
From: Snail Scott [mailto:snail@MINDSPRING.COM]
Sent: Monday, May 06, 2002 10:31 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: triangle cone or rectangle cone?
At 06:08 PM 5/6/02 EDT, you wrote:
>I've always used the triangle cones from orton but this week while buying
>supplies at a ceramic shop my husband noticed the rectangle shaped ones. He
>insists that the rectangular ones should be more exact beccause it will
>always bend at the same point versus the triangle bending depends how you
>place it and that the bending point can be different all the time.
Yes, this is true. The Bell sitter 'bars' have
the advantage of consistency; the Orton sitter
cones have the advantage of flexibility. You
can set the cone into the sitter at different
positions and get slight variations in the
firing temperature.
A 'feature'? or a 'bug'? All depends on what
you want! ;)
Personally, nothing I fire is fussy enough for
it to matter much. Variables like load density
have a greater effect on my firings that the
precise position of the sitter cone. I use both
sorts of sitter cones, depending on where and
when I bought them, mostly. My witness cones
are always the same, so who cares what's in
the sitter as a failsafe?
-Snail
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Bruce Girrell on wed 15 may 02
Mercy Langford wrote:
> >I've always used the triangle cones from orton but this week while buying
> >supplies at a ceramic shop my husband noticed the rectangle
> shaped ones. He
> >insists that the rectangular ones should be more exact beccause it will
> >always bend at the same point versus the triangle bending depends how you
> >place it and that the bending point can be different all the time.
And Snail Scott replied:
> Yes, this is true. The Bell sitter 'bars' have
> the advantage of consistency; the Orton sitter
> cones have the advantage of flexibility. You
> can set the cone into the sitter at different
> positions and get slight variations in the
> firing temperature.
I did not understand from the original post that Mercy uses her cones in a
kiln sitter. If she does, then what Snail writes is certainly applicable.
But the rectangular bars were designed to be used only in a kiln controller
(as are the Orton junior cones).
The Orton Large cones should not be compared to rectangular bars. The Orton
large cones are designed to bend from the tip, hence their shape. The Orton
Foundation can provide you with a CD that can be used for determining
temperature even for partially bent cones. When the Orton cones are set at
the proper angle and fired at the proper rate, they provide very accurate
and repeatable measurement of kiln temperature. You have far bigger
variables in your system that cone inaccuracies.
Bruce "the biggest variable in my firings is _me_" Girrell
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