If you were not successful in part 4, open the file called MP3Player_part5.wire,
located in the wire directory of the CourseWare project. This file contains the
completed model from Part 4.
Watch Part 5 of the tutorial.
Navigation Key Curves
You will create the cross-section profile of the Navigation key using Keypoint
curves, and then Revolve them to create the surfaces.
1 Turn off the visibility of the Front Casing layer.
2 Choose Layers > New to create a layer for the central navigation key.
Change the layer name to NaviKey.
Maximize the Left window.
First you will create a construction line to specify the tangency for the
center of the button.
TIP It can be useful to turn off the guidelines when you are using Keypoint
curves. To do this, choose Preferences > General Preferences ❒ to open the
option window. In the Modeling section, choose zero for the Maximum
Number of Guidelines. This prevents any guidelines from being created.
3 Choose Curves > Keypoint Curve Toolbox, then Keypoint Curve Tools >
Lines > Line and use Grid Snap (the Alt (Windows) or Command (Mac) key)
to place the start point at the origin.
464 | Chapter 7 Modeling an MP3 Player
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