The little one was only supposed to be a test, but it was decent enough to keep. The cutout matched the template, but that front left foot looks seriously wrong.

The big guy was the real goal.

I was just goofing around with ideas for a finish. I didn't have any commercial patinas available, so I tried ferric chloride from my setup for etching printed circuit boards. It actually came out nice, better than the pictures suggest.

Despite this project obviously not having any computer-science content (the CAD part wasn't strictly necessary), it does show some of the crossover among computer science, electrical engineering (only in the practical sense here), and mechanical engineering, which is collectively considered as part of mechatronics, a very multi/interdisciplinary field I've been active in since long before the term became popular. Not everything we do has to be research-grade innovation. Just being able to support other projects and fields with mundane, yet often inaccessible, skills and tools, like fabrication, goes a long way in diverse team environments. My research history is loaded with this kind of effort, although I've only started documenting it relatively recently.

multimechatronics.com