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I have recently constructed a calliope from inexpensive materials;
in fact, the whole thing cost about $100 not including the solenoids
which, luckily, were given to me.
Details of how to build your own calliope are available at
my web site: http://webone.com.au/~mydav/index.htm.
David Kerr
 [ The home page downloads very slowly; the calliope page is
 [ http://webone.com.au/~mydav/calliope.htm
 [ The instrument features affordable pipe materials and operates
 [ at 3 inches water column pressure.  It's quite nice looking.
 [ -- Robbie
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