Copyright Goodheart-Willcox Co., Inc. 124 Section 2 Fundamentals of Shape Description through the object. The cutting-plane line is drawn offset through the object to include the desired fea- tures. Those features are then shown on one plane in the section view. See Figure 6‑6. The section view itself does not show the bends in the cutting plane and appears as if it was cut by a flat plane. An aligned section is usually drawn for a cylin- drical object with an odd number of features. The cutting-plane line is offset through the features such that they can be “rotated” to a normal vertical or horizontal plane and projected to the section view. The result is equivalent to the feature being “aligned” with a normal full-section cutting plane. See Figure 6‑7. Notice the upper arrow in this figure is perpendicular to the cutting-plane line, since the cut profile will be rotated into a vertical position and not foreshortened. A broken-out section is created when a small portion of a part is exposed to show the interior construction. This is like starting to cut the object with a plane, but then breaking off a piece of the object, leaving the rest of the object shown in a regular way. A cutting-plane line in an adjacent view is unnecessary. The sectioned portion of the view is separated by a short break line, as presented in Unit 2. See Figure 6‑8. This type of section view can also be used to show exterior and interior details on the same view, similar in fashion to a half section. As in other cases, the hidden lines in the nonsec- tioned portion of the view may be drawn if needed to explain other interior details, or they may be omit- ted for clarity. Goodheart-Willcox Publisher Figure 6‑5. The half section is created when a symmetrical object is drawn as a blended view with one-half as a section view and the other half as a regular view. Goodheart-Willcox Publisher Figure 6‑6. An offset section is drawn with a cutting- plane line offset through the object to include the desired features. Goodheart-Willcox Publisher Figure 6‑7. The cutting-plane line of an aligned section is offset through the features so they can be “rotated” to a normal vertical or horizontal plane and projected to the section view.