In article .com,
"RHF" wrote:

RC,

I use 3/4" Schedule 40 White PVC Pipe.
http://www.harvel.com/pipepvc-sch40-80-dim.asp
SIZE = 3/4" / OD = 1.050 / ID = 0.804
WT = 0.113 / Lbs/Ft = 0.226

It Works Like This :
The 2.75 Inch Slinky goes over the 1.05" PCV Pipe.

snip

Nothing wrong with using the pipe but you could use nylon cord just as
well. The cord should be easer to use than the pipe.

--
Telamon
Ventura, California