bobcarver

I would like to turn a number of open shapes into closed shapes for use in another program. Is there a command that will take a open shape i.e a line or arc and give me the outline of that shape. As an example a 10mm line with a 2mm stroke would turn into a rectangle with a 10mm size and a 2mm size. It would be nice if cap, join and alignment of the line segments was converted accurately. At first I thought I could do this as a cover to curves operation (like you do on text). However, that does seem to work. Sorry for the newbie question.