I am new at CNC, and just converted my Smithy 1200 LTD to Mach3. I use MasterCam 9.1 to generate my G-code. Learning it was painful, so to help others I put together an article describing the process. I tried to be as brief as possible (challenge for MC9), and added as many screen shots as reasonable. I compiled it with emphasis on smaller machines running Mach3 and similar controllers. Find it on my server at:
http://www.novalab.org/mc/mastercam_tutorial.pdf
Before you criticize me too much, remember I am an electrical engineer and not a machinist . I hope you find it useful, and am looking forward to any feedback.
Regards,
Chris :banana: