How to Turn a Shape into a Line? Pen Tool?
I'm trying to make the "unlock arm" - I pretty easily made the locked shape by using the Pen tool to bend two circles into shape. But subtracting the connections to make a line out of a shape is more difficult. You can see in my 2nd photo the outcome, deleting the points with the Pen tool removes that corner point but "preserves the connection" of the shape, so to speak.
How can I make that curved line of the lock arm? Can I do this out of a shape by subtracting the bottom line? Or should I just start with a straight line and bend it to the appropriate curvature?

