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Forging new generations of engineers

Forging new generations of engineers. Sketching Strategies in 3D. In This Lesson:. Pictorial Sketches Isometric 3D Sketching Techniques Oblique Perspective Orthographic (Multiview) Drawings Precedence of Lines. Pictorial Sketches. Show shape of object Show height, width, and depth

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Forging new generations of engineers

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  1. Forging new generations of engineers

  2. Sketching Strategies in 3D

  3. In This Lesson: • Pictorial Sketches • Isometric • 3D Sketching Techniques • Oblique • Perspective • Orthographic (Multiview) Drawings • Precedence of Lines

  4. Pictorial Sketches • Show shape of object • Show height, width, and depth • Three common types: • Isometric • Oblique • Perspective

  5. Isometric Sketch Width and depth lines are drawn at 30 degrees

  6. 30° 30° Step 1 Step 2 Isometric Cubes

  7. 30° 30° Step 3 Step 4 Isometric Cubes

  8. Step 1 Step 2 Isometric Circles & Curves

  9. Step 3 Step 4 Isometric Circles & Curves

  10. Step 5 Step 6 Isometric Circles & Curves

  11. 3D Sketching Techniques • Boxing in the Sketch

  12. 3D Sketching Techniques • Boxing in the Sketch

  13. 3D Sketching Techniques • Isometric Grid Paper

  14. Description Annotations Label Notes Title Signature Date 3D Sketching Techniques

  15. Oblique Cube - Cavalier

  16. Oblique Cube - Cabinet

  17. One Point Perspective

  18. Two Point Perspective

  19. Pictorial Drawing Disadvantages • Create foreshortened views • Do not allow for accurate prototyping

  20. Orthographic (Multiview Drawings)

  21. Orthographic - Principal Views

  22. Orthographic - View Selection • Characteristics for selecting the front view • Best shape & details • Longest dimensions • Fewest hidden lines • Most natural position or use of object • Most stable position • Relationship of other views

  23. Precedence of Lines Object lines exist over hidden and center lines Hidden lines exist over center lines Cutting plane lines exist over center lines

  24. Precedence of Lines Example 1 Object line over hidden lines Example 2 Object line over center line

  25. References: Bertoline, G.R., & Wiebe, E.N. (2003). Technical graphics communication (3rd ed.). Burr Ridge, Illinois: McGraw- Hill. Madeson, D.A., Folkestad, J., Schertz, K.A., & Shumaker, T.M. (2004). Engineering drawing and design (3rd ed.). Albany, NY: Delmar Publishers. Walker, J.R. & Mathis B.D.(2007). Exploring drafting (10th ed.). Tinley Park, IL: Goodheart-Willcox Publisher.

  26. Credits: Writer: Matt Putman Content Editor: Wes Terrell & Sam Cox Production Work: C.J. Amarosa

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