Hello, I wanted to know if it was possible to create a machine that can convert elements to those of your choosing? The most likely canadidate(and only canidate) is transmutation by fusion or fission. I know this is a physics forum but this stuff is covered in physics and you guys are pretty smart. How would this be possible, not possible, etc. It was achieved before by the way. Note that energy required and radiation should not be a problem. If theoretically possible then what applications obvious or not, would they have.