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Computer-Aided Design

WEEK 2 ASSIGNMENT

Exploring 2D and 3D CAD tools, design processes, and file management techniques

Assignment Checklist

Status Task
Modelled experimental objects/part of a possible project in 2D software
Modelled experimental objects/part of a possible project in 3D software
Documented how you compressed your image and video files
Include your original design 2D files
Include your original design 3D files
Include a 3D View of my design
Catia VS Fusion 360
Fusion 360 Stress Analysis

Group Assignment: 3D Printer Design Rules

As a group, we focused on understanding the design rules for our 3D printers by testing various print parameters and limitations. Our goal was to evaluate how well our machines handled different challenges, including overhangs, bridging, layer adhesion, and dimensional accuracy.

1

Design Rules Exploration

We explored various design rules and constraints specific to our 3D printers to understand their capabilities and limitations.

2

Parameter Testing

Tested different print parameters including layer height, infill density, and print speed to optimize print quality.

3

Challenges Evaluation

Evaluated how well the printers handled challenges like overhangs, bridging, and dimensional accuracy.

4

Documentation

Documented our findings and created guidelines for optimal 3D printing with our equipment.

2D Design with CorelDRAW

Vector Design Process

Creating precise vector graphics for laser cutting and engraving applications

DXF Files

3D Design with CATIA

Advanced 3D Modeling

Parametric modeling and complex surface creation for engineering applications

STEP Files

CATIA Interface Navigation

The CATIA interface provides powerful tools for designing complex 3D models. Here are the essential navigation controls:

Command Function
Pressing scroll Rotates the view in the 3D space
Scroll + Right Click Pans the view across the workspace
Scroll Up/Down Zooms in and out of the model
Shift + Scroll Rotates the view around the Z-axis

Tutorial Resources

CATIA vs Fusion 360

CATIA

Professional-grade CAD solution for complex engineering

Strengths:
  • Advanced surface modeling capabilities
  • Industry standard for automotive and aerospace
  • Excellent for large assemblies
  • Robust simulation tools

Fusion 360

Cloud-based CAD/CAM/CAE platform for product development

Strengths:
  • Integrated CAD, CAM, and CAE tools
  • Cloud collaboration features
  • More accessible for beginners
  • Generative design capabilities

Feature Comparison

Feature CATIA Fusion 360
Parametric Modeling
Surface Modeling (Advanced)
Simulation Tools
Cloud Collaboration (Core Feature)
Generative Design
Learning Curve Steep Moderate
Cost High Subscription-based (more affordable)

Image Compression with GIMP

Optimizing Media Files

Reducing file sizes while maintaining quality for web and documentation

1

Open Image

File > Open to select the image you want to compress

2

Export As

File > Export As to open the export options

3

Select Format

Choose file format (JPEG for photos, PNG for graphics)

4

Adjust Quality

Use the quality slider to balance file size and image quality

5

Preview & Export

Check the preview window and file size, then export

Compression Results

Image Original Size Compressed Size Reduction
Design Screenshot 1 2.4 MB 450 KB 81%
CAD Rendering 3.8 MB 620 KB 84%
Workshop Photo 4.2 MB 780 KB 81%