There are two solid lines and a dashed line inbetween. Then when I create a drawing from this (flattened) I see the two folds represented by three lines each. I've chosen the bend options to give me an inside dimension of 2.5'. If I create a sketch which is 2.5' x 4.0' with two 1' flanges on the 4' edges I end up with a U shape. I'm having trouble figuring out how to effectively use the sheet metal drawing features of Alibre. Determining bend lines on sheet metal parts
