yes that makes perfect sense. I'll try and readjust my settings. Thank You!

I am teaching myself mill level 3 and i'm stuck on the first tutorial. I have followed the instructions on the included dvd and followed from the book. When i go to generate the first tool path, Surface rough>pocket, I input all the correct parameters, as instructed by both book and dvd, but when i finalize everything and click ok the message "Unable to determine a valid machining zone - no toolpath created" appears. Any suggestions as to what i am doing wrong or how to fix this?