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Sketching

Learn and demonstrate the fundamentals of sketching, including sketching concepts, types of sketches, and sketching materials and techniques.

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Sketching

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  1. Sketching 2.00 Explain and demonstrate basic sketching skills and techniques.

  2. Sketching Concepts 2.01 Explain the concepts related to sketching.

  3. Purpose of a Sketch • Quickly & easily get an idea on paper • Design sketches • Freehand technical sketches • Technical illustrations

  4. Freehand Technical Sketch • Freehand technical sketches can be multiview or pictorial. This type of sketch usually includes more detail and structure than design sketches. They are also typically include dimensions

  5. Design Sketch • Design sketches are rough sketches that are used to quickly capture an idea. They tend to have less detail, structure, and restrictions than freehand or technical illustrations

  6. Technical Illustration • Technical illustration include more detail, structure, and restrictions than other types of sketches. The objective here is to create a sketch that looks as close to the final object as possible.

  7. Paper Pencil Soft lead Optional Eraser Grid Paper Sketching Materials

  8. Sketching Technique • Proportion The relation in size between various parts of a drawing. A drawing is said to be in proportion if all its parts are correct sizes when compared to all other parts. • Clarity the quality of being easy to see; sharpness of image • Sketching Aids • Figure 2-6 a-c (BTD) shows a useful methods of sketching aids

  9. Sketching Lines • Vertical lines • Top to bottom • Long straight lines • Series of short straight lines

  10. Sketching Angles • Begin with 90°angle 45° 60° 30° Subdivide once Subdivide twice

  11. TERMS • Point • Is a symbol that describes a location in space • Line • Is the path between two points that is straight or curved • Plane • Is a surface that is flat. • Texture • Refers to the surface quality of an object

  12. SKETCHING TERMS POINT LINE TEXTURE PLANE

  13. Sketching Circles & Arcs • Begin by lightly constructing a square

  14. Sketching Assignment

  15. Sketching 2.02 Explain the concepts and principles underlying isometric, oblique and multiview sketching.

  16. Sketching • Types of Sketches • Single-view • Multi-view • Pictorials

  17. Single-view Sketching • Technical purposes • Front view • Most descriptive features

  18. Object Steps for Single-view Sketching Step 2 Step 1 Step 3 Step 4

  19. Multi-view Sketching • Technical sketch • Front view • Top view • Side view

  20. TOP VIEW FRONT VIEW R. SIDE VIEW Multi-view Sketch

  21. Single-view/Multiview Sketch Assignment

  22. Pictorial Sketches • Quickly communicate an idea • Three dimensions in one view • Width • Height • Depth

  23. Pictorial Sketches • Three (3) types • Isometric • Oblique • Perspective

  24. Isometric Sketch HEIGHT WIDTH DEPTH

  25. Isometric Sketching • Three equally spaced axes of 120°

  26. Isometric Sketching • Receding lines • Typically 30° off horizontal

  27. Isometric Sketching • Circular shapes appear as ellipses

  28. Isometric Ellipses • Correct ellipse orientation

  29. Isometric Sketching • Non-Isometric lines • Locate endpoints and connect

  30. Isometric Sketching Assignment

  31. Oblique Sketch HEIGHT DEPTH WIDTH

  32. Oblique Sketching • Front view is drawn true shape and size

  33. Oblique Sketching • Receding edges are usually drawn at an angle of 30°, 45°, or 60°

  34. Oblique Sketching • Circles and curves drawn on frontal plane will appear true shape and size

  35. Oblique Sketching Assignment

  36. Perspective Sketches 1-Point Perspective 2-Point Perspective

  37. Perspective Sketches • Objects appear as the eye would see them • Most realistic type of pictorial sketch • Most difficult pictorial sketch to draw

  38. Perspective Sketching Assignment

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