I just finished building a 4-octave rank of flue pipes made entirely
of sugar maple.  This is a dimensionally stable wood that absorbs
little moisture from the atmosphere and generally "weathers" well
with no varnish or oil of any kind.  The pipe rank (and the rest of
the organ) will spend most of its life indoors.  The pipes sound good
and I am happy.

Several people have suggested that, if I planned to use the organ
outside for an extended period, it might be useful to coat the pipes
with a varnish or shellac or oil rub of various sorts.

What is the common practice on this subject?  Do or did any of the band
or fairground organ builders use any kind of finish on their wooden
pipes?

Bill Finch