04bTextbook+Chapter+02+Sketching

04bTextbook+Chapter+02+Sketching - Chapter 2 Sketching...

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Chapter 2 Sketching
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Objectives • Explain the importance of sketching in the engineering design process • Make simple sketches of basic shapes such as lines, circles, and ellipses • Use 3-D coordinate systems, particularly right-handed systems • Draw simple isometric sketches from coded plans
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Objectives (cont ` d.) • Make simple oblique pictorial sketches • Use advanced sketching skills for complex objects
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Introduction • Sketching – One of the primary modes of communication in initial stages of design process – Means to creative thinking
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Introduction (cont ` d.) • Sketching techniques – Portraying 3-D coordinate systems on 2-D paper – Shading – Cartooning
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Sketching in the Engineering Design Process • Sketch: any drawing made without using drawing instruments (such as triangles) • All you need for sketching – Pencil, paper, eraser, imagination • Initial sketches based on rough ideas – Refine sketches as you refine your ideas
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Sketching Lines FIGURE 2.02. Techniques for sketching straight lines.
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Sketching Lines (cont ` d.) FIGURE 2.02. Techniques for sketching straight lines. (cont ` d.)
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` d.) FIGURE 2.03. Rotating the paper to draw an angled line. FIGURE 2.04.
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04bTextbook+Chapter+02+Sketching - Chapter 2 Sketching...

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