I know this is an old Q, but my dad has quite a neat tool
One of his hobbies is making stained glass panels, and for cutting the glass for that he has a sort of miniture bandsaw where the blade is like metal string coated with diamond fragments. It runs either wet or dry and although its quite slow on hard materials it is brilliant for cutting complex shapes. He bought it from the States years ago and I have never seen anything like it over here.