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MMD > Archives > January 2000 > 2000.01.30 > 04Prev  Next

Mitering Organ Pipes & Wood Pipe Construction
By Harald Mueller

[ Richard Schneider wrote in 000111 MMDigest: ]

> I question the wisdom of "mixing" woods like this for construction,
> especially where glue joints are concerned.  The reason I'm concerned
> has to do with the fact that there are different expansion/contraction
> coefficients at work in the different species of wood involved. Conse-
> quently, with the changes of season, the pipes can, quite literally,
> "tear themselves apart" by the war waged between the different woods!

As far as I can remember, I saw (large) pipes with oak fronts and pine
sides and backs at Jaeger & Brommer in Waldkirch (but if this is incor-
rect, blame me, not Jaeger & Brommer!).

> The same thing can be true with the mouth area.  If you don't build the
> "block" with the grain running the same direction as the bodies of the
> pipes (in other words: vertical!), the cross-graining will cause the
> pipe to self-destruct with the changes in season.

This is certainly true, not only with organ pipes but with all sort
of woodworking.

Harald M. Mueller
Grafing, Germany

(Message sent Sun 30 Jan 2000, 17:12:59 GMT, from time zone GMT+0100.)

Key Words in Subject:  Construction, Mitering, Organ, Pipe, Pipes, Wood

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