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Ch.3 Sketching, Text, and Visualization . What’s technical sketching? (3.1) Sketching techniques (3.2) Use construction lines wisely to maintain proper proportions (3.3) Intro to projections (3.4) Multi-view sketching technique (3.5) Multi-view sketches (3.6)

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ch 3 sketching text and visualization
Ch.3 Sketching, Text, and Visualization
  • What’s technical sketching? (3.1)
  • Sketching techniques (3.2)
  • Use construction lines wisely to maintain proper proportions (3.3)
  • Intro to projections (3.4)
  • Multi-view sketching technique (3.5)
  • Multi-view sketches (3.6)
  • Lettering and Text on drawings (3.8)
  • Visualization for design (3.9)
  • Visualization techniques for engineering drawings (3.12)
technical sketching 3 1
Technical sketching (3.1)
  • The process of producing a rough, preliminary drawing representing the main features of a product or structure. Generally less finished, less structures or restricted, and less time for its creation. Use either grid paper or blank paper.

Means to create technical drawings

Level of detail of freehand technical drawing

slide3

Visualization for design (3.9): Transforming your ideas into tangible graphic images serves both as a permanent record of those ideas and as a means of encouraging further creative thinking. What’s the difference between the two figures below.

freehand sketches the level of detail
Freehand sketches – the level of detail

Multi-view sketch

Rough sketch

Shaded sketch

Pictorial sketch

proportions and construction lines
Proportions and Construction Lines

The relative proportions of the primary dimensions of an object is more important than their actual physical sizes. A proportion is the ratio between any two dimensions of an object.  Go through the exercises in p.151-153, step by step to get used to the concept.

slide9
Intro to projections: Learn how to create pictorials and multi-view sketches (& know the differences among them)
multi view sketches 3 6
Multi-view sketches (3.6)

One-view, two-view, 3-view sketches. Depends on the complexity of the object. See p. 170-171 for the steps

visualization techniques for engineering drawings
Visualization techniques for engineering drawings

Object – Image plane – The eye of the reviewer relationship

Horizontal, vertical, and depth