Hood,
Thank you for your help. I changed the values to 25000KHz and the pulse settings to 10 and 10 in both x boxes and y boxes. After changing these settings I decided to try cutting a 1" dia hole in hardboard , feed rate was 20, d.o.c was .050 with 20% step over I was using a sharp .25" endmill 8000 rpm. The hole came out to be .987 in the x and .978 in the y. When I cut my first circle on the machine when I got it running I thought I was a lot closer to 1 in both x and y, could changing pulses have affected this . Or do I have some kind of backlash, machine is brand new fresh acme nuts and all. Or am I being too picky and is this what the community would call reasonable for a 1" dia hole