The PCB artwork on that clock is truly stunning. A work of art.
Just in case anyone else is considering doing something similar with complex trackwork, Osmond PCB on the Mac will import DXF files and also PDF artwork.
I have never managed to get the DXF import to work although I have tried DXF output from a number of programs.
I have had great success in producing complex artwork for a capacitive touch sensitive music keyboard with Osmond PCB, using the PDF import method. The PDF should contain vector artwork of course, not a bitmap image.