Hi All,  Here are some interesting sites:

http://w1.430.telia.com/~u43000075/Orgelb.html  [Web site of Gisli
Olsen, Sweden]  Gentleman building a grind organ with PVC pipe
resonators and wood for the speaking parts.  There is some interesting
information on the unit valve blocks he built.

http://windworld.com/emi/ [Experimental Musical Instruments home page]
Go to articles, then look at the one on "Sugar Belly" Walker and the
Bamboo Saxophone.  [http://windworld.com/emi/sugarbel.htm]

http://www.shol.com/bruner/projects.html [Musical Instrument Projects
designed by Dan Bruner]  PVC clarinets, flutes and drums.

http://ourworld.compuserve.com/homepages/kadima/experiem.htm
[Jubilee Music Instrument Co.]  Good info on PVC flutes.

http://sponsor.globalknowledge.nl/ros/repair.htm   Reed Organ Repair

http://www.vex.net/~rixax/GlassO/  ["The Glass Orchestra, founded in
1977, is the only ensemble in the world whose musicians create and
perform contemporary compositions entirely with glass instruments."]
Glass music instruments.

And everyone should see  http://www.mimf.com/ the Musical Instrument
Makers Forum.  I've found things like a spread sheet used in building
and tuning marimba bars, etc.  Many topics are discussed, from
materials to design to tools to adhesives etc.

Later,
Mickey Sadler,
Dublin, Ohio