Quote Originally Posted by rgsparber View Post
Ah yes, Manual Numeric Control. As I understand it, the technique was first used to make helicopter blades near the end of WWII. Guy Lautard's Bedside Reader has a great article on this. I translated his approach into a pocket calculator but, for the general case, I think a spreadsheet works better.

Rick
I prefer to call it HAM - Human Assisted Machining - the flip side of CAM.