3. Computer Aided design

This week’s focus was to look at various kinds of design tools for computer aided design, 2D and 3D.

Research

I experimented with a few tools, however found that the learning curves for most of these tools are pretty steep. For 2D designing, experimented with GIMP and ImageMagick (raster design tools) and FreeCAD (vector design tool). For 3D design, I experimented with FreeCAD and Fusion 360. Also tried to look at Inventor, but could not since it was not available on Mac.

Raster tools seemed intutively to be more suitable for pre-existing image editing rather than a first class design tool. Ofcourse one could design on raster tools as well, however one would need to have a very steady hand to be doing core engineering designs.

I found FreeCAD as a very powerful tool for undertaking both 2D and 3D design, though it does have a reasonably steep learning curve. The other tool I experimented with for 3D design was Fusion 360.

I followed the Drone Webinar Series to create a motor plate as the first component for my potential final project, for getting an introduction into Fusion 360. My intent was to try and design the same component using both Fusion360 and FreeCAD to compare and contrast the experience of using these two tools in the real world.

Design output file for Fusion 360

Things which stood out for Fusion 360: The tool seems to provide a number of features designed for reducing the drudgery of repetitive work. Hotkey capabilities also provide a nice touch to make life easier for regular / power users. The concept of a construction line for sketching is another nice touch, which makes reduces the effort required for right positioning / aligning. I am yet to experiement with the simulation capabilities of the tool

Things which stoof out for FreeCAD: It is free and open source (?). I felt the ease of use is not as much as Fusion 360, making for a higher learning curve.