Peter Cowan wrote:

     Nice work, Bill.  I am also pursuing an approach using rigid

tubing.  I'm trying to find

     some kind of flexible (semi-rigid) material of about the diameter

of the pipes to

     "model" the system before getting into welding of the tubes.  Did

you find a way to do

     that?

Al,
For various degree bends you could get auto rad hose segments and if this is
just to model it you could use junk hose from wreckers. There are plenty of
shapes available.
My running installation uses rubber hose bends and aluminum straight
sections. I wonder how much drooling around the world was caused by those
pictures of Bill's installation.
Peter

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