I used my phase II RT to make it CNC. I found the backlash was quite adjustible and I could take most of it out. I still make the table run in one direction just to be sure. My use is more for indexing to drill holes etc and therefore use it only in the vertical orientation. The main reason I used this one is I bought it back before I could even spell CNC much less know what it was. It has worked very well for me.