The CAD files were produced by Ashlar-Vellum Graphite. I have converted them to Vellum (.vlm) format, since the viewer program is 3MB instead of 6MB.
I have produced PDF files, but it's better to have the original CAD drawings which you can view using Ashlar's free viewing program, available for download for Windows or Mac. (They have no plans to support linux. I asked.) This way you can create exact-scaled prints (assuming your printer is accurate--I've had good luck with HP laser printers, and mixed luck with inkjets) whereas I have had problems with PDF print scaling. Even if you're going to use CNC, it helps to generate a full-scale print on sticky paper for rough cutting first. Another advantage is that the Ashlar programs let you turn layers on and off, and shoot dimensions that I may have omitted.
These are the Vellum CAD files (click to download via ftp):