I have created Plate 3, using sweep command. The plate has been created in an assy. dwg using: Insert, new part.

In order to create a manufacturing dwg I have to provide un unfold of the plate. I have tryed to convert the solid part to sheet metal; did not work.

I have tryed to offset each surface and knit all the surfaces together...

Can anyone suggest how to convert to sheet metal and get an unfold

Thank you