Ruled
Between 2 edges
Select the first curve or edge.
Select the second curve or edge.
You will not have to indicate the sense of the supporting
profiles.
Axis scaling of curves
Select the necessary curves on the parting line to do the ruled surface.
Design the center point for the scale.
Enter the scale factor.
Ask for RULED BETWEEN CURVES

Once the surfaces are done use the function SEW
to finally get a single parting surface.
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