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Mastering Technological Design Sketching Techniques

Learn the art of sketching as a universal language in industry, emphasizing line types, object representation, and hidden features. Understand drawing scales, perspectives, and space utilization for efficient and precise sketches. Enhance your hand-lettering skills and follow basic steps to scale sketches accurately for professional designs.

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Mastering Technological Design Sketching Techniques

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  1. Technological Design Sketching

  2. Why Draw ? • Universal Language or the Language of Industry “A Picture is worth 1000 words”

  3. Line Types • Construction • used to build the drawings • very light solid line ________ • Object • used to show the object • thicker, darker solid line _______ • Hidden • used to show hidden features of an object • thin dark dashed line _ _ _ _ _ _ _ _

  4. Center lines • A center line represents an axis of symmetry • ___ _ ___

  5. Sketching • Created freehand • Must be done neat and clear • use proper perspective • Must be done quickly and efficiently

  6. Drawings & Scale • Draw an object to scale….. “it is directly proportional to the actual object” • Scale: 1 : 1 Is proportional to 1 Unit of Actual Object 1 Unit on Paper

  7. Reduced Scale • Scale: 1 : 10 Is proportional to 10 Unit of Actual Object 1 Unit on Paper DRAWING IS 10 TIMES SMALLER THAN THE OBJECT

  8. Enlarged Scale • Scale: 10 : 1 Is proportional to 1 Unit of Actual Object 10 Unit on Paper DRAWING IS 10 TIMES LARGER THAN THE OBJECT

  9. Hand drawing – Sketching to scale • Plan your use of space • Choose the appropriate scale • Use the grid on the paper to draw to scale • Label the drawing clearly using good hand lettering skills

  10. Sketching to scale–Basic steps • Build a frame

  11. Sketching to scale–Basic steps • Block in overall sizes for each detail

  12. Sketching to scale–Basic steps • Add the details

  13. Sketching to scale–Basic steps • Darken the lines

  14. Spacing the Views • Draw the views so that they are balanced on the drawing paper • Avoid crowding or excessive space

  15. 6-4 Hidden Surfaces and Edges Drawing hidden lines

  16. Technique Circles 1 2 3 4 5 6

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