This is an "old school" engraver, it's not electric, just hand powered. It works on the principle of a pantograph. With one hand I trace the letters in the tray. With the other hand I put pressure on a diamond tip to scrape the metal away.
I have both Block letters and Script fonts. I might even make my own fonts and symbols. The fonts are just pierced stencils in thick brass, not hard to do at all.
I'm excited at the possibilities! A new tool always means new designs!