Michael Wendt on mon 2 dec 02
Get a small squirrel cage fan (35-50 cfm). place it at the exit point of
your choice in a wall or ceiling. If you like, you can use a dryer vent with
flap valve to keep insects out when not in use. Attach the aluminum flex
duct to the suction side of the fan, run it to the bottom of the kiln and
attach it to a "Tee" made either of galvanized steel or aluminum. Place one
inlet side of the "Tee" tightly against the bottom of the kiln where you
have drilled 3 or 4 1/2" diameter holes. Cover the other part of the
"Tee" with a movable piece of metal so you can adjust the amount of suction.
You want to drill 5 or 6 1/8" diameter holes in the lid of the kiln if you
don't get enough air through, but most kilns leak air anyway. Adjust the air
draw using a lit cigarette to assure that air goes into the kiln.
IMPORTANT NOTE: The vent will alter the cone readings if the peeps are loose
and will chill the cones in the kiln sitter so we always shut off the vent
once the organics have burned out, something you will learn by turning off
the vent and sniffing periodically until there is no more stink. Your vent
can also cause cracks wherever the cold air streams leaking in hit hot
pottery so shield such places with saggars.
Regards,
Michael Wendt wendtpot@lewiston.com
Wendt Pottery
2729 Clearwater Avenue
Lewiston, Idaho 83501
1-208-746-3724
wendtpottery.com
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