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4-5 Section Views

Some objects have internal surfaces that are not directly visible in normal orthographic views. Section views are used to expose these surfaces. Section views do not include hidden lines.

Any material cut when a section view is defined is hatched using section lines. There are many different styles of hatching, but the general style is evenly spaced 45° lines. This style is defined as ANSI 31 and will be applied automatically by SolidWorks.

Figure 4-41 shows a three-dimensional view of an object. The object is cut by a cutting plane. Cutting planes are used to define the location of the section view. Material to one side of the cutting plane is removed, exposing the section view.

Figure 4-42 shows the same object presented in Figure 4-41 using two orthographic views and a section view. The cutting plane is represented by a cutting plane line. The cutting plane line is defined as A-A, and the section view is defined as view A-A.

All surfaces directly visible must be shown in a section view. In Figure 4-43 the back portion of the object is not affected by the section view and is directly visible from the cutting plane. The section view must include these surfaces. Note how the rectangular section blocks out part of the large hole. No hidden lines are used on section views.

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