I got desperate and drew the centerline of the bend (with tangents) as a 3D polyline and then used the "TUBE" command in CadWorx and it worked like a dream.
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
The plural of anecdote is not "data"