Curves in 3D Coat is a wonderful feature which allows custom spline models to be used with organic curve. Please enjoy this video tutorial to learn how to use this.
You can create chains or any shapes using this handy too. You can use closed or open curves, or use the curve to create a filled shape. There are many instances where this tool can come very useful. This can be used to create tubes on a machine for example.
It is also possible to brush along a curve. I will cover this in another tutorial.
Please watch the video tutorial and I hope you enjoy it.