For the past couple of days I've been trying to find a way to rotate an object in order to show a front and side profile for publication.  However, rotating with respect to the x, y, or z axes does not produce the correct result (even after moving the center-of-mass of the structure to the origin).  What I need is a way to determine the principal axes of rotation for a given selection so that rotation about any one of these axes does not produce a "wobble" effect.  I've even tried drawing a rectangular box around the object and then drawing an axes through the centroids of opposing faces but I still see wobbling.  I've basically exhausted all of my attempts at this problem.

Any help or suggestions would be greatly appreciated.


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