I am just about to build an extractor chimney for my soldering
station. I like to use quite a lot of heat so getting rid of the
fumes is a problem at present. I think you need a chimney at least
6" diameter going out into the atmosphere, through the roof or the
wall with an extractor fan if possible. I am going to make mine
from aluminium sheet pop-riveted together. Hope that helps.
Richard W
UK
Email: riich@rw.clara.net