Can't join

[Susan_Hughes]

Hi, I managed to fillet this surface but I can’t join the filleted edge to the extrusion. Why not? Please help!verbena earring.3dm (3.3 MB)

[Zsimon]

Hi Susan.
If the main polyline is to remain the one you have drawn (which has continuity zones G0),
instead of the extrusion command, I copied the main curve and connected to the primary with an intermediate perpendicular curve. Then I used the sweep 2 rail command and the fillet command. Maybe it helps.
verbena earring.3dm (3.2 MB)

-Simon

[Stratosfear]

I’d just rebuild the shape curves as a single curve. To clean up all the continuity breaks. Then you can use Insert kink to add the break. A form this simple should always fillet automatically.