Phew! Thanks Lee I thought it was me being stupid, can i delete the duplicate?

Did I see one of Bungalowdogs ballscrews there? What diameter is the splined end of the quill...and what taper is it?
Kip
Dam you have good eye sight, it is a bungalowdog ballscrew, bought it before I saw the coments on here about how usless it might be, Shed load of backlash in the reduction gears, need to isolate the ballscrew to check that, but it dosnt look up to much.

The quill is a morse 2 taper and the spline is 14.75mm outside dia. and an effective dia. of 11.25mm minus the splines and would require a 225mm long drill bit. The collet chucks have an M10 thread so would need sleeving I presume.

Im a little concerned about the quality of the internal taper on the quill so was wondering if I could cut the end off and put an M10 thread on that and screw it in to 20mm straight shank holder? or will I have allignment problems and is it likely to shear off under load?

Cheers