Would it be possible to add an option in the sheet metal flange feature to choose a flange to remain parallel to a plane or face? We are making custom HVAC fittings where the sizes, offsets (in both side to side and up/down) and lengths change slightly but the flanges would always stay parallel to the YZ or XZ planes. The attached PDF is an example. We want the 1.50" flanges to always be parallel to a plane. Currently we have to measure the angle from the plane, and change them manually. If you would like more detail, I would be happy to assist.
Rod Jones