Gail Dapogny on wed 23 apr 03
It is so great to have Tim reply so articulately (and so graciously!) to
the bizarre stuff that Cindy was told. Thanks to computers in general and
Clayart in particular, such questions and statements can be addressed with
immediacy before everyone has forgotten what was said.
---Gail Dapogny in Ann Arbor
>After reading the message from Cindy Gatto I felt that I should respond.
>The Orton kilnvent and all of the other licensed downdraft vents such as
>Skutt, L&L and Bailey do not remove much heat from the kiln if installed
>properly. In past studies the firing times were extended by only a short
>period of time if at all. The kilnvent system does not cause problems but
>can go a long way toward solving problems that may be happening to your kiln
>and your ware. It can help even out a kiln, solve glaze problems caused by
>firing, protect your elements by providing an oxidized atmosphere and most
>importantly, protect your health. Contrary to what some people may say, the
>firing of ceramics can produce carbon monoxide and toxic fumes from heavy
>metals. These are produced to different degrees depending on the materials
>used and type of firing technique. Some of these toxins can accumulate in
>the body. The downdraft vent systems remove these toxins and gases, mix
>them with fresh air in the plenum of the unit to bring them to a safe level
>and then deposit them outside. After talking to Cindy and Mark, I think
>that their problem is probably of electrical origin. They will do some
>further research.
>
>If anyone has further questions about kilnvents and firing, please feel free
>to contact me. Thank you.
>
>Best regards,
>
>Tim Frederich
>Orton Ceramic Foundation
>
Frederich, Tim on wed 23 apr 03
Hello all,
After reading the message from Cindy Gatto I felt that I should respond.
The Orton kilnvent and all of the other licensed downdraft vents such as
Skutt, L&L and Bailey do not remove much heat from the kiln if installed
properly. In past studies the firing times were extended by only a short
period of time if at all. The kilnvent system does not cause problems but
can go a long way toward solving problems that may be happening to your kiln
and your ware. It can help even out a kiln, solve glaze problems caused by
firing, protect your elements by providing an oxidized atmosphere and most
importantly, protect your health. Contrary to what some people may say, the
firing of ceramics can produce carbon monoxide and toxic fumes from heavy
metals. These are produced to different degrees depending on the materials
used and type of firing technique. Some of these toxins can accumulate in
the body. The downdraft vent systems remove these toxins and gases, mix
them with fresh air in the plenum of the unit to bring them to a safe level
and then deposit them outside. After talking to Cindy and Mark, I think
that their problem is probably of electrical origin. They will do some
further research.
If anyone has further questions about kilnvents and firing, please feel free
to contact me. Thank you.
Best regards,
Tim Frederich
Orton Ceramic Foundation
6991 Old 3C Highway
Westerville, OH 43082
Phone: 614-895-2663 x 36
Fax: 614-895-5610
E-mail: frederich@ortonceramic.com
Frederich, Tim on thu 24 apr 03
Belinda,
I also like the bottom center removal point the best. Many people have the
Bailey and do not seem to have any problems with it. On the kilns where I
have installed vents or outlets on the side, I place the intake holes in the
lid on the opposite side of the kiln to cause a diagonal downdraft through
the kiln. The only place that I have seen cold spots is if you place ware
directly under and up close to the intake holes at the top of the kiln. I
hope this answers your question.
Best regards,
Tim
-----Original Message-----
From: Belinda Willis [mailto:howardbelinda@EV1.NET]
Sent: Thursday, April 24, 2003 1:43 PM
To: CLAYART@LSV.CERAMICS.ORG; Frederich@ORTONCERAMIC.COM
Subject: Re: KilnVents
Tim, since you invited questions about kiln vents.......
I want to get a kiln vent to even out temperatures inside my kiln. I would
prefer L&L's since it's out-take vent is positioned in the center of the
floor under the kiln but the price is a bit steep for me. The Bailey
version has it's out-take vent positioned on the side on the kiln, near the
bottom and I'm wondering if that creates a cool spot in the bottom front of
the kiln, opposite the vent. Do you know?
Belinda Willis
Santa Rosa, CA
Belinda Willis on thu 24 apr 03
Tim, since you invited questions about kiln vents.......
I want to get a kiln vent to even out temperatures inside my kiln. I would
prefer L&L's since it's out-take vent is positioned in the center of the
floor under the kiln but the price is a bit steep for me. The Bailey
version has it's out-take vent positioned on the side on the kiln, near the
bottom and I'm wondering if that creates a cool spot in the bottom front of
the kiln, opposite the vent. Do you know?
Belinda Willis
Santa Rosa, CA
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