www.cnc4pc.com  A great source for integrated electronics CNC solutions.

www.kdntool.com  The 'Mercedes Benz' of  minimill CNC conversions.

www.cuttingedgecnc.com  A great site integrating CNC and RC hobbies.

www.geckodrive.com  The premier stepper and servo drivers of the hobby world. These drives have even found their way into the industrial market.  

www.cncfusion.com A great site with retrofit hardware for Sieg X2 and X3.

www.homecnc.info A great site for servo CNC mill/drill conversion.

www.pmdx.com Breakout boards, power supply board and more great stuff.

www.stirlingsteele.com Great mini mill retrofit plans.

www.embeddedtronics.com PCB's for driver and breakout boards and other great stuff.

www.cnc-electonics.com A great site for boards.

www.cncadvertiser.com An information site with great CNC resources.

www.industrialmetalsales.com Supplier of metals for CNC projects.

www.pdjinc.com  An excellent website for robotics and related items

www.machmotion.com Very nice enclosures for mach based CNC controllers