What are some disadvantages of 3-D modeling when considering section views?
What will be an ideal response?
One disadvantage of the nearly automatic section creation offered by 3-D modeling is that in some cases, the modeling becomes too accurate. Many of the shortcuts and clarification practices used in traditional drafting are no longer available in some software. For example, a section through a spoke or vane used in a 3-D model would show the spoke or vane filled with section lines, not blank as would be preferred. Also, all projections would be true projections. With an object of odd rotational symmetry, there would be no opportunity to modify the projection to create a symmetrical presentation, as would be preferred. With some software, the step edges of an offset section may be visible in the section view, and not removed as is practiced.
Another disadvantage of 3-D modeling is that manual creation of section views has been a traditional method of developing spatial reasoning and mental imaging skills. When the process is too automatic with software, a person may not adequately develop these skills in the absence of the software and may become too dependent on the software. When faced with multiple section views in a shop drawing, that person may not be able to create a mental image of the part or may not develop the skills necessary to interpret the drawings. Eventually, the person will develop these skills, but it may require exposure to many solids models and their drawings.
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What will be an ideal response?
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Indicate whether the statement is true or false.
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What will be an ideal response?
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What will be an ideal response?