EDIT: My example was misleading. I don't want to use polys/faces. Please see the example of how this is done in Maya:

enter image description here

My first example didn't make it clear that I want to influence the way the "bridge" is formed by the other bounding curves. Is there not a way to do this? Curves can be used to define a bevel (which creates a surface) but it seems there is not a way to model like this. Please let me know if you know of a way to model like this using surfaces or something other than polygon faces. Thanks!

Original: I am trying to make a car using curves. How do I create an interpolated surface between them? (How to I patch them together?) Here's a simple example. I have these two curves: Two curves to be interpolated to create a surface between them.

Here's a mockup of what I mean: Mockup of patched curves.

I've done this in Maya, and here's the user-guide page on how to do exactly this. (click here) There has to be a way to do this in Blender. I just have to believe! ;) Thanks for your help! -Ben

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    $\begingroup$ related: blender.stackexchange.com/a/28101/1853 $\endgroup$ – user1853 Aug 22 '15 at 0:55
  • $\begingroup$ A curve and a surface are actually two different object types. You can't add a surface to a curve only object. As mentioned in other answers you can convert your curve to a mesh and add faces to it. If you want to do your modelling with a surface object, you will need to add a new surface object and start again. $\endgroup$ – sambler Aug 22 '15 at 11:17
  • $\begingroup$ You can create some shapes using surfaces. However, if the curve exhists already I think you can use it only as a reference. $\endgroup$ – Mr Zak Aug 24 '15 at 20:31
  • $\begingroup$ Related: blender.stackexchange.com/questions/1503/… $\endgroup$ – Paul Gonet Oct 22 '15 at 13:12

Add a Curve (Shift+A-->Curve-->Bezier) and model the first profile being in Edit Mode. When finished, select it (A), duplicate (Shift+D) and place as far from the first one as you want. Model the duplicated second profile as you like. enter image description here

Go to Object Mode, change the curve's resolution (Preview U and Render U) to 3, then select it and press Alt+C-->Convert to Mesh. enter image description here

Go to User Preferences (Ctrl+Alt+U) and enable the F2 add-on. enter image description here

Select two vertices as pictured below and press F continuously to fill the gaps. enter image description here

Add a Subsurf Modifier to the mesh to make it look smoother. Enable a Smooth Shading in the Edit panel of a Tool Shelf (T). enter image description here enter image description here

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  • $\begingroup$ As pdlarry suggested, Brige Edge Loops operation works better and faster than F2 add-on. And you have some extra options when you use it: gfycat.com/WetEmbarrassedIlladopsis $\endgroup$ – Paul Gonet Aug 22 '15 at 12:27
  • $\begingroup$ I edited my original post to clarify my question. I am wanting to know how to model without polys/faces, just using curves. Much like you can create two curves and use one as the bevel object of the other (creating a "surface") I wonder if there is a way to make other surfaces out of curves that I can control and model with aside from just bevels. I've noticed the "NURBS" surface option, but I can't control NURBS the same way. $\endgroup$ – Ben Mora Aug 24 '15 at 18:06
  • $\begingroup$ @Ben Mora, please see this related answer: blender.stackexchange.com/questions/1503/… It may be what you're looking for. $\endgroup$ – Paul Gonet Oct 22 '15 at 13:14
  • $\begingroup$ Thanks for this!! This got me out of my banner creating jam! $\endgroup$ – ckpepper02 Mar 10 '17 at 21:08

If the two curves have the same number of vertices, you could, in Edit Mode, select both curves and then Mesh->Edges->Bridge Edge Loops.

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    $\begingroup$ bridge edge loops will only work with a mesh not with curves. $\endgroup$ – user1853 Aug 22 '15 at 0:42
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    $\begingroup$ True. Convert curves to meshes first, as Gonzou suggested. $\endgroup$ – pdlarry Aug 22 '15 at 18:27

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