Peter, thank's for the reply, i have some experience with my XYZ proturn lath , but not with cnc millers, i had a chap draw up some of my parts on mastercam but when i tries to load them onto the machine it would only accept part of the program, there was clearly something in the program that the machine didn't like, unfortunatly for me the chap who did the drawings pulled out of the project the following day so i am now stuck with some programes i can do nothing with,

i suspec tthe post processor he used was either the wrong one or needs treaking, neither of which i can do as i am not experienced enough to work out the problem,

any thoughts,
cheers carl