Thank you John, a very clear decription of what I need to know. I looked at the new version of easycnc3 but could not decide if the extra £100 was worth the expense. So I will try the route that you have outlined and see where it gets me. My conversion of my x1 is almost running but I have now getting problems with the connector nut on the ballscrew coming undone. I have made a couple of locknuts and now have to disassemble tofit them. Main problem with the nuts is the thread is not normal m8 x 0.75 so I have had to make my own lock nuts.

Another thing that is worrying me is how to lubricate the ways, either oil or grease vis oilers or nipple, I think I must have spent more that buying a ready made kx1 by now.

peter