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Why do CAD users still need design knowledge and experience?
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drafting
Figure 1: Two techniques of representing an object. (A) Perspective drawing, suggesting that the object is cubical. (B) Orthographic top and front views, revealing that the object is not cubical.
While Computer-aided design (CAD) software is a powerful tool for creating and manipulating graphic images, it functions similarly to a word processor. Just as a word processor can format text but cannot write an article, CAD software can assist in drafting, but it cannot perform the creative and analytical work of a designer.1
Design knowledge and experience remain essential for several critical reasons:
- Conceptualization and Intent: The designer is responsible for the basic conception and final solution of a project. CAD software lacks the ability to generate the original ideas or the engineering intent required to guide the design process.12
- Technical Judgment: Producing a set of drawings requires the application of good judgment to select the best combination of specifications and views to convey information clearly. Designers must understand orthographic projection, material properties, and fabrication processes to ensure a design is feasible and functional.2
- Complexity Management: A design team must combine creativity with skills in analysis and visualization. Experienced professionals are needed to determine fits, clearances, and manufacturing feasibility, ensuring that all regulatory and functional requirements are met before production begins.2