Quote Originally Posted by irving2008 View Post
14mm root, C style fixing, 1850 long, 727rpm
Yeah, having two fixed ends does improve things - although on my machine it's one fixed (BK), and one floating (BF), and I would guess that's what the standard machining on Gary's ballscrews would provide.

I suppose you could use BK on both ends, but you'd need to make the ends with a lot of precision (or have a number of different size shims to pad out the end with the screw-thread).