--If you're going to run miles of wire thru this I suspect
you'll want a very special kind of tubing. One guy I know, who does
robotics with multiple cable runs, uses a teflon tube which seems to be
relatively immune to wear from braided steel cables. I think it comes
from MSC but not sure.

--
"Steamboat Ed" Haas : For some reason hung up on
Hacking the Trailing Edge! : Mexican Oompah bands...
http://www.nmpproducts.com/intro.htm
---Decks a-wash in a sea of words---