Introduction%20To%20Engineering%20Communication%20by%20Sketching%20and%20Isometric%20Pictorials%20-%201

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Introduction To EngineeringCommunication by
Sketching and Isometric Pictorials - 1

• Agenda
• Understand graphics as a communication tool
• Make a first 3-D and 2-D sketch

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Reference Materials

• Introduction to Graphics Communication for
  Engineers (IGCE) by G. R. Bertoline
• 1st Chapter Introduction to Graphics
  Communications
• 2nd Chapter Sketching and Text (through Section
  2.4.1 for today)

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Attempt in teams of two persons to describe the
part below in words only. Write your description
on a sheet of paper.Q Would this be an
effective way to tell someone how to build this
part?
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Chap 1 Topics to Note

• Reasons for Technical Drawings
• Tools for Technical Drawing
• Traditional
• Computer Based
• Alphabet of Lines

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Chap 2 Sketching and Text

• Types of Technical Drawings
• Advice on Freehand Sketching
• Introduction to Projections

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Three Basic Types of Technical Drawings

• Freehand sketches
• Instrument drawings
• Computer drawings and models

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Advice on Freehand Sketching

• Orient paper to be comfortable
• Mark end points of the lines to be sketched
• Relax and draw in direction comfortable to you
• Draw long lines as a series of short lines
• Use grid paper when available

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Introduction of Projections Our challenge is to
present 3-D objects with 2-D media

• Two Basic Categories
• Multi-view Pictorial

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Assignment A First Sketch

• On a plain sheet of paper
• Sketch a multiview (front, top, right side)
  drawing of the object in slide 3
• Sketch an isometric drawing of the object in
  slide 3