How can extend this face

[ho-kou]

hi everyone,

I  selected edges and try to extend the face(Picture_1) , but can't get a result like to picture_2.

I must select  the  edges at once time and use extend type 'Natural'.

Thank you for your help.

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[HughesTooling · Accepted solution]

The trouble is you have 2 surfaces and you can't extend the edge of the smaller round surface. You can unstitch then untrim the larger surface to make it easier to modify. See attached file.

Here unstitched to 2 surfaces.

then hide the smaller one and untrim the bigger one.