Hi Syziph - this really needs a tool that MoI doesn't have yet called "Surface from network of curves", or "Gordon Surface".

In the meantime I have attached an alternative method - for this one I deleted one of your 3 curves, and cut one of the other ones in half. Then I did a sweep with the vertical curve as the profile shape, and the two longer halves as rails.

I think this gets you quite close to the result that you were looking for. But you do lose a certain amount of extra control from the extra profile that I deleted. But you can regain some additional control with this single-sweep method by adding more sections along the sweep direction.

That's probably going to be the easiest way to get close to the result you want with the current set of tools. If you build it out of little sections it will be difficult for them to meet up smoothly.

But I'm hoping to add the network surface tool in pretty soon, I think maybe for the next beta.

- Michael