Long-time user here... Haven't done a lot of sheet metal, though
Here's what I'm working on.
I've tried this a few different ways now. I've created one side, and it's drawing.
Drawing is correct, cutlist is filled out, and everything.
I select a plane, use "insert mirror part" select the two boxes for sheet metal info, and get my opposite part.
For one, is there away to automatically get the mirrored drawing? Kinda doubt it...
So, I saved a copy of the original drawing, as the new opposite part number. The opened it, and changed the reference to the new opposite part.
Of course all of the dimensions went nuts. I can re-dimension it, but I can't get a good cutlist out of the opposite part.
We're starting to do a lot more sheet metal, and we often have mirrored parts.
Our vendors will always mess up if we just make one drawing and say "xx-xxx is opposite of this"
Been down that road.