Thanks so much. Going through some of these motions... installed OpenSCAD, made something basic which was easy. But I found out that making something more complex forces you to invent your own layout system. Last month I looked on Udemy and did part of Mango Jelly's course. It's a good one, I actually found out later that he has a bunch of stuff on YouTube.
I'm still reading the rest of this and your other comment, thanks so much. Inspirational.
I'm still reading the rest of this and your other comment, thanks so much. Inspirational.