I wasn't so happy with the outcome that I would do it again, I just posted that to show that welding brass is possible. Actually, that plane was the first brazing I had done in many years, I'm sure I would do a bit better job now. It's very solid though, and works pretty well. I dabbled in making carved top wood instruments, that was the reason for that plane.
I have too many unfinished projects already, so I am studiously ignoring the possibility of sand casting things. In my experience, it's tricky to cast things without porosity ruining your finish.