mel jacobson on wed 1 aug 12
i know, i am just being smart ass, but....
buy spiral pipe/ one piece metal material.
you can see it in most modern buildings as
material for air conditioning and heating ducts.
the expose it, and paint it to match.
it is one piece duct....any size, length or gauge.
we have a plant here in minnepolis.
they give away dented and mis shapen pieces.
it is really hard to find the old crimped ended pipe in heavy
gauge, as all air cond folks use spiral. some/most sheet metal
companies have thrown out the crimper.
i have gotten about 5 pieces, ten feet long, 10 and 12 inch
diameter free.. i also made a video of the plant to include
in the video for the kiln book.
a kaowool sleeve slips right in. you can stack 10 sleeves
in ten feet.
then, the best part...pick it up in your hands and place
it on your brick chimney. it is light weight. two people can slide it
on a roof and place it in the roof hole. i do it myself.
sharlene might hold the ladder.
i use itc to glue the liners together.
here is the way....place the pipe in the hole, wire it tight. then
soak the end
of both ends of the liner in a itc. ( a slurry in a five gallon pail)
drop the first one in place and splooosh, it sticks to the brick.
do it again, and sploosh it sticks to number one, and then you
do that ten times. it becomes a solid tube. no leaks.
the problem with the liners is: they may be uneven. then you have
small gaps. the heat burns out and melts the metal. it is important
to make the sleeves gap free. itc works great.
you could use high temp mortar thinned, but itc really works best.
i spray the inside of all my stacks with \itc 100.
it may seem expensive, but the life of the stack is
tripled. even in salt. it is amazing.
mel
http://www.visi.com/~melpots/
clayart page below:
http://www.visi.com/~melpots/clayart.html
http://www.21stcenturykilns.com/
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