Thank you for your reply and welcome, Over the last few weeks I have been trolling through the interwebby look for CNC information, my main use would be woodwork but some plastic and soft ally might be used, I have a workshop at present and most equipment to help me build the CNC, cost is not a great issue, I was thinking of buying a complete unit but I`m weighing this against self/build/cock-up/rebuild, One issue I do have is noise, my shop is in a residential area so some sort of sound proof hood will be required.
I was looking at these sliders with some interest especially the belt drive ones could these be linked to a stepper?

The size of my CNC would be approx 600 x 400mm bed to give me room for bigger work-pieces.
As I have said I am totally new to this but very excited about the possibility it will give my Carpentry work