The purpose
Filling the hole created by removing points.
This time, I will explain using the easy-to-understand example of removing half of a torus.
This is a half-torus with points removed.
A circular hole is visible.
This page presents two methods for filling it.
Environment
Blender：3.4.1
OS：Windows 11
Fill with Fill
Select target
Select all points that fall on the deleted section.
Fill
Select “Create New Edge/Face from Vertex” from the “Vertex” menu at the top of the screen (or press the F key).
Result
The holes were filled in as follows
Fill using merge
Select target
Select all points corresponding to the deleted cross-section.
Merge
Right-click the screen, select “Merge Vertices,” then “Bundle.”
Result
The holes were filled in as follows
This state is unnatural, but by additionally selecting points adjacent to the merged point and smoothing them, a more natural look can be achieved, as shown below.
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