Well, the first thing you have to address is that left and right objects are different - see how the swirls at the top are layered inward on one side and outward on the other. You need to pick one and model it.
Thanks for your response Jeremy!. The drawing shows the “front” (left) and the “side” (right) view, it´s supposed to be the same object, but since it was made in 2D, is just a representation of what could be. What I´m trying to do is to make a 3D model of it. Regardless of that, if I chose one of the two figures, I would appreciate it if you could give me some tips on how to achieve that geometry. Cheers!
Well… I suspect it is going to take a lot of hard work with steps being repeated and refined. But here’s a thought on getting started with just one of the edges. This one:
It looks to me like that is a tapered spiral making about 1.75 turns around some curved centreline. I’d start out by trying to visualise that centreline:
I started with a couple of tangent lines at the ends to set the position and direction and put a blend curve between then rebuilt that as a degree five curve before moving some of the mid-curve points to swell out the curve. I added circles around each end to mark where the spiral is to fall.
I then measured the length of the centreline and the radii of the circles and replicated the topology with a straight centreline of the same length, before creating a tapered spiral of 1.75 turns around the straight centreline:
I then used Cage Edit on the straight spiral to move portions of the curve up and down the centreline and/or in and out until the curved spiral came close to matching the edge on the 2d illustration:
Once I was happy with the result (because the next step would break history and prevent further manipulation) I rebuilt the curved spiral to get a much simpler curve (24 points) before dropping some perpendiculars from it, adjusting their directions and lengths and then sweeping them using the simplified curve as the sweep rail: