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2. Computer Aided design

Assignments and Assessment this week

Assignments

Model (raster, vector, 2D, 3D, render, animate, simulate, …) a possible final project, compress your images and videos, and post a description with your design files on your class page

Learning outcomes

Evaluate and select 2D and 3D software Demonstrate and describe processes used in modelling with 2D and 3D softwares Demonstrate image and video compression

Have you answered these questions?

Modelled experimental objects/part of a possible final project in 2D and/or 3D software Shown how you did it with words/images/screenshots ![](..mented how you compressed your image and video files Included your original design files

HOMEWORK

Model (raster, vector, 2D, 3D, render, animate, simulate, …) a possible final project,![](..ment your work with images and video, and post a description with your design files on your class page. Make sure you try multiple types of CAD, both 2D and 3D, that work very differently. Compress your images and videos to conserve space!


Use all CAD is Free

All the CAD software I selected this time can be used for free even after joining the Fab academy. However, some of them have restrictions on free use.

2D CAD

I tried three 2D CAD programs this time: GIMP, Inkscape, and Affinity.

GIMP

GIMP is free raster image editing software. Raster images are a format in which images are represented by a collection of pixels (dots). They are suitable for delicate color expression such as photographs (.jpg, .png), but tend to become grainy when enlarged. They can be edited in Photoshop.

Open GIMP In the GIMP by open image set grey scale

save setting choice jpeg Quality 50 to Export Quit GIMP

Inkscape

Inkscape is free vector image editing software. Vector images are a format in which lines and surfaces are defined by mathematical formulas and represented as a continuous form. They are suitable for scaling (.ai, .svg) such as logos, and retain clarity regardless of resolution. They can be edited in Illustrator.

Open Inkscape and openfile chek the change data

put the text

change text whight

cut off the image to text sape

save

Affinty

Affinty was originally developed by the British software company Serif as a series of three paid apps: Affinity Designer (vector), Affinity Photo (raster), and Affinity Publisher (layout/DTP). Canva acquired Serif and integrated these three apps in October 2025, releasing the single “Affinity” app with basic functions free of charge !! This integration means that you can now switch between uses such as “vector,” “raster,” and “layout (DTP)” all within a single piece of software. It seems that integrating CanvaPro’s AI, which requires a fee, will make it even easier to use. Considering the days when you had to pay Adobe Tax to use Illustrator, Photoshop, and InDesign, I think this is very good software.

I tried to do the same thing with Affinty as I did with Inkscape and GIMP, which is to process photos and cut them into letter shapes.

3D

Fusion

Fusion is a 3D solid CAD software that can be used free for personal hobbyist use. While the paid version does a lot more, even the free version allows for design, rendering, animation, manufacturing (CAM), drafting, and electronic design (formerly Eagle). Despite some limitations, it was far easier to use than FreeCAD, which I used as a student, and I still use it as my main CAD software. However, compared to AutoCAD and SOLIDWORKS, the accuracy of the CAD remains questionable.

mg996r-servo-motor

SLIDE POT 10K OHM

Blender

Future policy

I’ve tried a few different things, and I’ve decided to use Fusion for 3D and Affinity for 2D from now on. However, I’d also like to try Blender and Unity.