Here's a short movie showing how the pipe fitting tool works in PT4R. A large flower pot probably isn't the intended use for this tool but it shows the basic principle!
Also, at the end is the points to surface analysis tool in Rhino being used to compare the accuracy. Thanks to Greg for showing me this cool function http://pointools.com/forum/viewtopic.php?f=13&t=206 - this topic explains further how to use the analysis tool.
