I need to have a sharp corner but with segmental lines should appear.
plz find the attachment.
I don't do too much sheet metal but based on my workshop experience I can say that even in the real world, sharp corners are not possible until you manufacture all sides as separate pieces and weld them.
I tried , I didn't get the exact sharp corners ... but , you can try "surface flatten " from surface command to get flat pattern.
Not exactly the way you want:
But you can put small radius 0,7mm in the corners on the rectangle
. In addition you could make another sketch for the bend lines based on the actual bend lines to drive all of of them in the corners if you want.
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