Sorry, I had the wrong part in the last question. This is the correct part. 359 degree bend-3.37 inch I.D.
You can make the base flange in the tube shape, then unfold it, do your cuts and then fold it, like in the image. the sketch for the base flange has a short tangent line to provide a fixed face for the unfold step.
You may, but do not need to include the short line element. You can perform the Unfold / Fold operations without it.
Below I am illustrating a circular sheet metal tube with a gap, sketch shown. I select the linear edge (highlighted green) instead of a face to begin my Unfold operation, and it does flatten. Then make your Cut and Fold as you described.
Mike,Thanks for the tip. That's easier.
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