Kip,

Had another thought.... as well as looking at the z axis I will need my two gantry side frames cutting, approx size at this stage which looks like it is not going to change is starting from a cut piece which is 500mm x 300mm x 20mm Aluminium. Once I have seen John S then I can finish putting all of the holes in the design which I would need putting into the frames also.

How many of these controllers did you say you wanted...!!!

If I had a choice out of the Z axis or side frames I would say make me the side frames. But really I dont want a choice, would be good if you could do both and I am sure we can come to some arrangement.!