Here is a possible solution for your example though.
goal: you want to apply piping along a surface
method:
1. make the target surface live
2. snap a cv or ep curve onto the surface where you want the piping
3. extrude a nurbs circle along the curve
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
Last edited by ctbram; 23-01-2012 at 11:22 AM.