Technical Drawing

Automotive Engineering Technology · Level 5  ·  6 Chapters

Compiled by: Martin Karanja

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What Technical Drawing covers

In this unit, you will be able to confidently handle all the essential tools and materials for technical drawing, mastering both precision and creativity. By the end, you'll be able to create accurate sketches, geometric forms, and orthographic projections, bringing real-world components and patterns to life on paper. Your skills will empower you to interpret and produce professional drawings that are vital in the trade, setting a strong foundation for your technical career.

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Careers after Technical Drawing

Technical drawing is the visual language that turns an idea for a car part, a chassis modification, or a new tool into something you can actually build. In Kenya’s bustling automotive sector, the ability to produce clear, accurate sketches and detailed engineering drawings opens doors to workshops, factories, and even your own mobile drafting business.

  • Custom chassis builders in Thika and Machakos - you create precise orthographic and isometric drawings of frame layouts, using proper line conventions and scales, so fabricators can cut and weld steel exactly to spec, and you charge a design fee for each project.
  • Vehicle assembly plants in Kiambu County - you prepare full-size sectional and auxiliary views of engine mounts, suspension components, and body panels, allowing the production line to set up jigs and tooling; your salary comes from a full-time drafting or CAD-assistant role.
  • Auto-body repair shops in Nairobi’s Industrial Area - you sketch freehand and then formalise damage assessments with accurate angle bisectors and scale conversions, helping the shop quote repairs and bill customers for the work.
  • Motorbike (boda-boda) frame manufacturers in Nakuru - you develop solid and interpenetrating models of frame geometry, applying correct symbols and abbreviations, so the workshop can order the right tubing and you earn per drawing or as a contracted designer.
  • Metal-fabrication workshops in Mombasa’s Port zone - you produce pattern drawings and oblique sketches for sheet-metal brackets and exhaust systems, enabling CNC cutters to program cuts; you are paid per set of production drawings or as a salaried drafter.
  • Automotive parts supply stores in Eldoret - you generate isometric and true-shape drawings of replacement components (e.g., brake calipers, fuel pumps) that help sales staff explain products to mechanics; you receive a commission for each drawing package sold.
  • Technical training institutes in Kisumu - you teach students how to identify drawing equipment, use different line types, and construct geometric forms, earning a teaching stipend while shaping the next generation of automotive engineers.
  • Freelance online drafting services serving mechanics across Kenya - you receive digital orders for 3-D-ready orthographic and sectional drawings, deliver them via email, and charge per project, turning your drafting skills into a home-based income stream.
  • County vehicle inspection stations in Garissa and Turkana - you interpret and produce accurate isometric sketches of modified vehicles to verify compliance with safety standards, earning a per-inspection allowance as a technical officer.
  • Rural agricultural-machinery workshops in Kitui - you adapt automotive drawing techniques to design sturdy implements (e.g., tractor hitch arms), providing drawings that guide local welders and earning fees for each custom design.

Mastering these drawing techniques means you can turn a sketch on paper into a real part on the road, whether you’re employed by a large plant or running your own design studio. Keep drawing - your future in Kenya’s automotive world is waiting.

Chapters

What Technical Drawing covers: 24 main topics in 6 chapters

1. Use technical drawing tools, equipment and materials

  1. 1.1 Drawing Equipment
  2. 1.2 Drawing materials
  3. 1.3 Use and maintenance of drawing equipment

2. Produce plane geometry drawings

  1. 2.1 Types of lines in drawings
  2. 2.2 Construction of angles
  3. 2.3 Bisection of angles
  4. 2.4 Measurement of angles
  5. 2.5 Construction of plane geometric forms
  6. 2.6 Construction of scales

3. Produce orthographic drawings of components

  1. 3.1 Orthographic drawings
  2. 3.2 Dimensioning
  3. 3.3 Sectional views
  4. 3.4 Free hand sketches

4. Produce solid geometry drawings

  1. 4.1 Sketches and drawings of patterns
  2. 4.2 solids drawings
  3. 4.3 Development and interpenetrations of solids
  4. 4.4 Different symbols and abbreviations
  5. 4.5 Auxiliary views and true shapes of truncated solids

5. Produce Isometric drawings

  1. 5.1 Isometric sketches and drawings of components
  2. 5.2 Isometric curves and circles
  3. 5.3 Oblique sketches of components

6. Produce assembly drawings

  1. 6.1 Orthographic views of assembly drawings
  2. 6.2 Sectional views
  3. 6.3 Parts List

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Beyond the syllabus

Other units in Module III