Prototyping With a Vintage Plotter From 1987
David (the hardware guy on my blog) made this cool modification. He used the Aritma Minigraf 0507 plotter manufactured in socialist Czechoslovakia to draw an etch-mask directly onto a PCB. He added an ARM-based interface and created the software that can generate vectors out of hi-res images of boards.
Check the video description for more information (including source files to download).
Btw the new version he is currently working on has a laser instead of the pen.