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kiln flues

updated wed 27 oct 99

 

Mike Gordon on tue 26 oct 99

Hi all,
I posted this a week or so ago and didn't see a response. So I searched
the archives and didn't get the info I wanted, so here it is again. What
is the flue size for a 20 cu.foot natural up draft ? I forgot to measure
the old one before I tore it down. Is a forced draft flue different from
a natural draft in dimensions? I have a 15 cu.foot natural updraft kiln
at school and the flue measures 8"wide and 7 1/2" deep. The one I'm
rebuilding is an old 70's Alpine.. Can I make the flue 8"x 9" and use
the dampers to lessen the opening if thats too large? HELP!!!!! Thanks
Mike