I have two mesh objects.
I want to extrude one object in such a way that it traces another object. I could have sworn I'd seen this done in a tutorial once, but I can't remember how and can't find it via googling or other Stack Exchange posts.

In the image, I've extruded once along the edge and once continuing away from the loop. I'd like to have each extrusion match the vertices of the loop in both position and rotation.
I looked at the possible duplicate, and it's based on both objects being curves. I was able to convert the loop to a curve, but not the circle quarter. I'm not sure why. And trying to recreate it as a curve opened another can of worms I'm too inexperienced to deal with.
Also note that the edge loop can probably be easily converted to a curve with Alt C
– gandalf3 Oct 29 '14 at 19:48