Surfaces to loft as solid

[Shawnqwe (Shawn)]

Hi, I’m trying to generate a solid model from surfaces using loft.
However, the generated model is uneven instead of smooth.

Surface_loft_solid.3dm (28.3 KB)
The right one should like below.

[Normand (Jakob Normand)]

[farouk.serragedine]

Use “OffsetSrf”