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Lesson 6

CAD & Technical Drawings

Tips for using CAD to strengthen your Engineering Portfolio.

Computer-Aided Design (CAD) is a great way to document your robot's design. Here's how to use it well in your portfolio.

Why CAD Matters

CAD demonstrates:

Types of CAD Views

Isometric Views

Overall robot from an angled perspective. Great for full robot overviews and assemblies.

Exploded Views

Show how components fit together. Useful for assembly order and highlighting parts.

Cross-Sections

Cut through to show internal components like motor placement and gear ratios.

Orthographic

Standard engineering views (top, front, side) for dimensional accuracy.

Best Practices for CAD Screenshots

  1. High quality renders: Use good lighting and shadows
  2. Hide unnecessary parts: Focus on what matters
  3. Add annotations: Label key components
  4. Use consistent colors: Same part = same color across images
  5. Include scale: Add dimensions or reference objects

CAD Page Layout Example

Here's how a typical CAD page might look in your portfolio:

pg. 5
Full Robot CAD — Isometric View
Drivetrain
Arm Detail
Large hero CAD render dominates the top half
Detail views focus on specific subsystems
Captions label what judges are looking at
Brief body text explains design rationale

Show Your CAD Evolution

Early Season

Version 1

  • Initial concept
  • Basic prototype
β†’
Mid Season

Version 2

  • Refined after testing
  • Added finer details
β†’
Competition

Version 3

  • Current design
  • All hardware modeled

Common CAD Mistakes

❌

Low-resolution screenshots that look pixelated when printed

❌

Cluttered images with too many parts visible

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Missing dimensions or annotations for clarity

❌

Only showing final design (not iterations)