How to fill a 3D bezier curve? If I turn a bezier curve to 3D the surface will disappear. But I need 3D curve because it uses all the 3 axis to define the shape. I tried all the Fill options (Half, Front, Back, Full) but none of those do anything for me.  

So how to fill a 3D bezier curve? What do those Fill options do using 3D curve?
What you can do is converting it to a mesh and grid fill the result:


AltC: convert to mesh
CtrlF: grid fill (in edit mode)




You have two options, allowing to tune the resulting geometry:


Giving more or less vertices to the curve
Adjusting the grid fill parameters