If you are not specifically looking to use a CNC machine to make your guitar, might I suggest another forum: www.projectguitar.com. Also you might want to try www.mimf.com, although this is one is more for acoustic guitars, archtops and violins. These are full of all kinds of information on how to build your own guitar. The CNC application is fairly specific and not common for most amature and small scale professional builders.
Finally, there is a commercial site with good 2D plans called www.guitarplansunlimited.com. I got a set of modified strat plans that were very well drawn and presented.