Hi Michael,

i'm looking for a straight and efficient way to get this result, in order to create seamless surfaces :

1) Take whatever "control point" curve, or even" through point" curve, composed of more than one curve segment.
2) Obtain an exact copy of that curve, made by only ONE curve segment.
3) At the same time, the resulting curve must contain the EXACT number and position of control points of the original curve.
That is, the same topology.
THIS IS THE CRUCIAL REQUIREMENT.

In order to get such a result, i made some tests both in Moi and in Rhino, without achieve the wanted result.

In Moi and in Rhino i tried lofts, extrusions, sweeps, isocurve extractions from those surfaces, edges rebuilding and so on....

I tried also the DelCorners script by Max Smirnov too, but all these commands modify the topology of the curve.

The attached files shows one of the ways i tried, hoping that the explanation be adequately clear.

I'm sure that you'll give me a better and straightforward way to get what i'm trying to achieve.

Have a nice day,

Marco.