This is really simple. I created one strip at a time. The entire object in my image is 10 separate spline objects. The first cross section is two boxes stacked on top of each other. I then created two more cross sections down the line. The second cross section I left alone. The third cross section I changed the shape of the boxes to get the opening. I then created two more cross sections down the line to close it back up. Then it was just a matter of positioning the points and smoothing out the transitions in the sweep envelopes. After that, I stacked a whole bunch of them together. -Kix

-Kix