One of John's
downdraft designs
Technical
Services Offered
Kiln Design
and Construction
Kiln Repairs
and Upgrades
Kiln
Evaluation and Valuation
Kiln Drawings
and Plans
Flame Safety
Design
General
Troubleshooting
Educational
Workshops
The photo at the
right shows two Ransome B-4 burners with pilots mounted securely
to the welded frame of a new downdraft kiln. Coated 1/2"
ceramic fiber board is used on the cold face to upgrade the
insulation behind the hard refractories in the firebox area. The
small shelf below each port is used to support burner port covers
to seal the kiln and protect the burner nozzles once cooling
draft flow is cut off.
I charge by the
hour for technical consulting work, design time, telephone time,
and repair time. New kiln designs and construction are quoted
based on the job. Phone, fax, copying, and other similar charges
are billable to the client.
Initial phone
consultation is free.
To truly gain all
the benefits of a downdraft kiln, the exit flues must be located
in the floor of the kiln chamber, not be a single hole in the
bottom of the back wall. Note in the photo at the right, the
tapering flue entrances and the progressive increase in the size
of the flue openings as they get farther from the chimney. This
improves draft flow, and assures maximum draw and even
temperature distribution in the chamber.
Educational
workshops on kiln design and construction are priced based on the
exact nature of the workshop, the number of days involved, the
preparation time necessary, the number of participants, and any
printed materials necessary.
Please contact me
by phone or e-mail to discuss your needs and for a specific
quote.
To the left you'll see the use of
cast and pre-fired APG Mizzou burner blocks for the inlet ports
of a propane fired kiln. These ports taper from a smaller opening
on the outside to a larger opening on the hot face. The blocks
are slightly less than 9" wide by 9 3/4" high, and are
spanned utilizing high duty 13 1/2" straights. Being a part
of the kiln wall structure that is exposed to extremes of flame
abrasion, atmosphere, and temperature, it is designed to be
easily replaced when it eventually fails without resorting to
tearing down the entire wall.
John consulted on
the construction of the period recreation of a colonial
earthenware bottle kiln located at Old Sturbridge Village living
history museum in Sturbridge, MA pictured at right. No material
was used in construction that was not available at the time, and
the hardware is all hand forged steel. This kiln is fired once a
year.
The Kiln Gallery
Some of John's kiln projects over the years
Typical Kiln Problems
These are things I encounter all the time
© 2000 J. Baymore
all rights reserved
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New Hampshire Institute of Art |
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Send EMail to River Bend Pottery |
Studio visits are welcome. Call 603-654-2752
to make sure I'm there.
This page last updated:
04/16/2002 08:18 PM
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