3ds Max. It's a low-poly model of an airplane that was created using the Mirror tool.
In this lesson, you'll work on a model that was built with an older version ofLow-poly airplane
Set up the lesson:
Files for this lesson are in the tutorials\p38_lightning folder.
Weld the seam between the two halves:
This model was built in an earlier version of 3ds Max using the Mirror tool, so there is a seam of unwelded vertices where the two halves of the plane meet.
You can also apply the Vertex Weld modifier from the Modify panel > modifier list > Object-Space Modifiers > Vertex Weld.
This is one way to clean up the model.
While the Vertex Weld can be used to reduce the number of faces a model has, greater values distort the model drastically.