What is the equivalent of sweep on a rail in Rhino? Bevel is not working for me I'm a jewelry designer and fairly new to Blender... This is my first time asking a question on the stack exchange. 

I was trained in Rhino a few years ago and I remember the function "sweep on a rail" which is where you could take a shape / multiple shapes and apply them to your curve (for us jewelry designers, it was a cuff, wire collar, etc.)

I'm having trouble finding the equivalent to that function now. I feel like what I'm trying to do is pretty simple. I want to make an open metal collar (that opens on the front side of neck) that is a half circle tube where the flat side of circle touches your neck at one end then naturally twist 90 degrees to touch your collar bone on other end of necklace (see pic). 

So far I've tried the bevel tool in the geometry section as well as a combo of array and curve but I can't seem to get it right. 

Any help would be appreciated. I'm happy to share the file as well. 

Thanks, 
Jessie


I tried Craig's advice, but this is what's happening now. For some reason the circle the wrong way so it's flat instead of a tube around the curve (collar). Here are some pics.
Final:



Steps:

Bevel object.

This will be our shape (profile) needed for beveling main neckles.

You can create it from Add > Curve > Circle and:


Rotate it on X axis by 90 degrees.
Go to Front Ortho view. 
Select half of it.
Press V and select Vector.
Move middle point to be even with top/bottom ones (you can use Snap to Vertices).
Go to Object Mode.
Scale it down a little.





  Note: It's important to have this shape properly rotated before
  Beveling another Curve.


Main object.


Create another Curve > Circle.
Go to Object Data tab.
Choose Bevel Object we have created earlier.
Check Fill Caps.
Uncheck Cyclic.
Position Bezier Points as you need.