I this isn't a new video but this is that kind of project that makes me wish I had a 3D printer until I hear about the cost, print time and see how much space it requires.
cost and size arent really an issue these days. Printers are no bigger than a monitor on a desk if you ask me.. what is frustrating is setting it up and dialing in a print...
The discussion of topology-optimized floating shelf brackets was pretty interesting and isn't something I've come across before. My wife would not be happy if I bought one right now. It's hard to justify without a commercial application.
