Hi Colin - one other note - with something like this where you want to have the deformed result loop around and have ends touching each other you will probably want to leave end caps off and then use Join on the result to glue those edges into a solid.

If you leave end caps on you'll have some coincident caps in the final result.

Also to make a good join make sure pieces that will touch go exactly to the edge of the base plane - one of the tubes in your example file here goes over the edge by a just a tiny bit (like 0.008 mm) but that's just enough distance so that it won't join to its partner when it is deformed. With that piece trimmed off then it will join.

- Michael