Thanks Jonathan

I will have a look at those to see what the requirement is etc and if these suit.
I definitely want ballscrews though, and it may be the case that by the time I get it assembled and figure out the electronic/software setup etc that I already have them or have got the money together so it shouldn't be too much of an issue, just that if I'm not quite at that point I might have to be a bit wary perhaps of using anything?