In article ,
Don Foreman wrote:

On Mon, 18 Aug 2008 05:58:03 -0500, nick hull wrote:



The one part I lack is a floating ball, larger than 3² and smaller than
5².

One possibility:

http://www.gazingballoutlet.com/Stai...eel-Balls/30-1

Styrofoam balls are readily avaliable, but I think they'd need to be
coated with something for use as a floating plug.

Best suggestion yet and it floats; now I have to calculate how high it
floats

Free men own guns - www(dot)geocities(dot)com/CapitolHill/5357/
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