2010

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bridge, you need to extrude more edges on the helmet mesh so that the number
of edges match when you create the bridge.
To extrude the bottom edges of the helmet mesh
1 In the perspective view, select the lower edges of the helmet mesh using
Select > Select Border Edge Tool.
2 Select Edit Mesh > Extrude, then drag the blue arrow manipulator in a
direction towards the inside of the helmet to create a row of edges that
are perpendicular to the selected bottom edges. Extrude these edges a
distance that is approximately one grid unit in depth (see image below).
To extrude top and side edges for the face shield
1 In the perspective view, select the upper and side edges on the helmet
mesh using Select > Select Border Edge Tool (see image below).
2 Select Edit Mesh > Extrude and then drag the blue arrow on the extrude
manipulator in a direction towards the inside of the helmet to create
edges that are perpendicular to the top and side edges of the face shield.
Extrude these edges a distance that is approximately one grid unit in
depth (see image below).
100 | Chapter 3 Polygonal Modeling