The Loft tool does not work - A trajectory formed by several arcs connected by a tangent Constraint

[maz]

Can you help me?
I am trying to join Surface_01 and Surface_02 using LOFT.
The start of the shape is sketch_04 and ends with the curve shape sketch_05.
The problem will probably also be that Surface_01 and Surface_02 is formed by arcs so that it can be dimensioned in the drawing.
I am attaching the IPT and a picture of what it should look like.

[blandb]

I wonder if it has to do with the rail edges being faceted and not smooth:

[maz]

-They are faceted so that individual arches can be dimensioned in the drawing.

-Or could it be combined into one curve with some tool?

[maz]

I am also sending the second model "TEST XX".
It is made without facets. It is made of spline.

[blandb]

Is the attached what you were trying to do? 2024 version

[johnsonshiue]

Hi! I would not use Boundary Patch unless it is absolutely necessary. The bottom face can be recreated easily by creating a zero-offset surface. Then the round can be done by a large-radius fillet. Please take a look and see if this model works better.

Many thanks!