Creating a plane between the two curves

[Dmitrius]

Hello everyone! Please tell me how you can do the following:

There are two growing line (X-Z plane, carve), I need to get between them grew a plane, in the form as shown (pink).

The main thing that it did not go beyond the limits of these curves,

the width of which varies along its length.

My experiments with skin, polyextrude, polywire did not work.

Thank you!

[kare]

merge two lines and add SKIN SOP below merge node.