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.
Design Rules Exploration
We explored various design rules and constraints specific to our 3D printers to understand their capabilities and limitations.
Parameter Testing
Tested different print parameters including layer height, infill density, and print speed to optimize print quality.
Challenges Evaluation
Evaluated how well the printers handled challenges like overhangs, bridging, and dimensional accuracy.
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
To create a new file, click on new document.
Assign the name of the file and customize the dimensions.
I copied a Google Chrome image as a reference for vectorization.
Use the pen tool to draw lines that can be converted into curves.
By doing the same for everyone, I get the expected figure when comparing it.
3D Design with CATIA
Advanced 3D Modeling
Parametric modeling and complex surface creation for engineering applications
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
Open Image
File > Open to select the image you want to compress
Export As
File > Export As to open the export options
Select Format
Choose file format (JPEG for photos, PNG for graphics)
Adjust Quality
Use the quality slider to balance file size and image quality
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% |