Unable to Loft the desired surface

Wayne K

Quick question: Need to a loft starting at ‘Mid_bez_arc’ to ‘Bot_Bez_arc’ (Model/Geometry names) that follows the curve of ‘Bezier_on_y_axis’ and ‘Bezier_on_trag’

 

I am having a problem creating a surface for my complex design. I have tried loft, spin, and path sweep with no success.  My goal is to make a surface from the bottom of ‘Loft1’ to ‘Bottom.’ This surface must have a surface normal that must match the surface normal of ‘Loft1’ diagonal surface and ‘Bottom,’ and the surface must be second derivative continuous. I have tried to do this by making Bezier curves: ‘Berier_on_trag’, ‘Berier_on_y_axis’.  A spin does not work because the origin of the arc is off-center, and when scaled to be smaller, the origin of the arc moves (See: ‘yo_point,’ ‘yo_point_scale1’, ‘yo_point_scale2’).

Is a Bezier curve second derivative continuous?

GGAMPALA

I'm not sure which version of Feko you are using but the "loft" works fine in 2021.2 (see below image):

 

However, the resulting surface may not be what you are trying to create. You may be looking for a surface to close out the area between the arcs completely. For that, I would recommend the "fill hole" option. Select the 4 edges forming this closed surface, make a union of them and convert the union to 'Primitive' (as the fill hole operation only works on Primitives). Then select the 4 edges forming the closed surface from the details section and apply the 'fill hole: smooth face-face transition' operation.

 

Result: