Two things: - a GPS lock can easily be defeated by the earnest with a GPS simulator, about a $2k fix. This isn't a great solution for the honest buyer, but any

Two things: - a GPS lock can easily be defeated by the earnest with a GPS simulator, about a $2k fix. This isn't a great solution for the honest buyer, but anyone with ill intention could easily activate these in Kansas and re-export to a controlled state. (edit: a GPS sim can't help with the gyros, so maybe its a better "lock" than I originally reckoned ;-) - there are excellent "open-source" substitutes available. The Mechmate community is thriving (http://mechmate.com http://mechmate.com) and these plans make it possible for a DIYer to build their own 4 axis CNC with tolerances to a thousandth of an inch or better. My father-in-law is a a cabinet maker (http://woodforyou.net http://woodforyou.net) who built one of these for his business a few years ago, here's a demo video showing his results... http://www.youtube.com/watch?v=lU3-6AapV3I http://www.youtube.com/watch?v=lU3-6AapV3I (Edit 2: I wrote this before I had an appreciation for the difference between a CNC mill and a CNC router. The Mechmate is a CNC router and used for very different purposes than a CNC mill. Anyways, comment might still have some value for some. Sorry for the noise ;-)