Hi guys this is all brilliant info and I will defo consider the pre made z axis but I don't think there are plans available for a vertical cnc, it's a suck it and see sort of project but with the help of the forum I'm sure it's doable just got to go through the motions! Jazzcnc thanks a lot your frame design looks a lot better and more practical to build. I will have to try and remember heat does effect the material! A combination of welds and bolts is the answer I guess!