This one’s a very slow boil until it all comes together at the end, so if you don’t have 10 minutes to watch, I understand. But in his defense, he documented it at quickly as he could. Only the first-side’s cutting is real-time, the other 5 are sped up.
[Cube in a cube] (Viewer #915,981)
Personally, I – like Hannibal Smith – love it when a plan comes together, so I found a lot of satisfaction in seeing the project through to the end. I kinda wanted to stand up and cheer that all that careful planning paid off.

Been a while since I’ve done any machining, but I’m pretty sure that’s aluminum.
Neat vid, though.