The idea here is to shine a light on these hidden interests and the little (or big!) mental blocks that come with them. If you're already rocking in those specific areas – or you've been there and figured out how to get past similar hurdles – please chime in! Share some helpful resources, dish out general advice, or just give a nudge of encouragement on how to take that intimidating first step.
Let's help each other get unstuck!
https://github.com/WillAdams/gcodepreview
That said, the only 3D CAD tool where I was able to follow the tutorial (after a fashion) was Dune 3D: https://dune3d.org/ --- if you haven't tried that, I'd highly recommend it.
The usual way to get started w/ molding is to make a vacuum molding machine:
https://makezine.com/projects/diy-injection-molding
(I remember one such plan page where the first project was to make a handle to make the machine more comfortable to use...)