Thanks everyone

Hi Ross. Try Chester tools,they sell add on quick change tool holders in different sizes. Dont know what size mine is, pretty sure its their piston T1, has dovetail slots, but its big and fitted to a 11 inch lathe and never had any trouble. Be prepared to bore them out / make a bush to fit you cross slide post
Sounds like thats what i need. its for my Halifax which an atlas clone and is 10" swing. mounting shouldn't be a problem as I have a tee slot table to go on the cross slide

I do mean ball screws but only machining them for bearings etc.

I had someone else machine my ball screw ends to fit into an angular contact bearing block - that is 16mm ballscrew turned down to dia12 for bearings, then M12x1 for nut, then dia 8 for motor coupling. 3 off cost me £50, and he did a great job, turning it around in a couple of hours whilst I visited relatives
I have considered just getting some one else to do it but wheres the fun in that? its also quite expensive for me to get it done locally.

Shame you dont live next door mate, we could stare at the problem for a bit over a few beers and I'm sure all would fall into place!
yeah I seem to be in the wrong part of the country for engineering.:nope: