Thanks for the update glad they are ok and will do the job. As much as I want to use slides at probably over £700 by the time they arrive just to do two axis I think I will give the roller idea a go first and do a few quick mock ups and see if I can get the stiffness to do what I want at least for starters. The aluminum on its own is the best part of £500 so to do such a simple job that im after a machine that would end up at around £1500 is going to be over my budget.