Hi Coredump
Thanks for the link thats one hell of a machine and looks like a really good site but unfortunatly I cant speak french and google translate dosnt seem work very well !!!

I couldnt see a diagram of his spindle. There was a pdf someone else posted but that used angular contact bearings not needle or did I miss an explanation or drawing?

I also noted that his design was for 5000prm max which would be fine for rollers or needle bearings, I'm looking for 18000rpm so I think that design is out for me.