a Steel Box Section Build with SBR20 & Ballscrews Plus a few questions

[EddyCurrent]

I appologize not having used one of these things would I be able to set a home and then use different paths for the further cuts ?

Rob, I think this is what you mean.
Home switches use the 'machine coordinates' whereas the work piece you are cutting uses 'machine coordinates', so a search for those terms should bring up some further reading.
Like a piece of graph paper the home switches will be at 'machine coordinate' X0,Y0 and if you clamped a piece of wood on the table for example and moved your spindle to the bottom left corner, that could be your X0,Y0 'work coordinate' and that's what you typically set to zero in Mach3 for example so that X0,Y0 in your g-code starts cutting in the right place.
So really you can give the machine an X0,Y0 work ccordinate starting point just about anywhere on the cutting table.
Think of the machine as big piece of graph paper that is in a fixed position (machine coordinates) and the work piece as a smaller piece of graph paper that can be moved about on top of it (work coordinates).
So on a 900 x 600 machine, if you put a workpiece with it's bottom left corner in the middle of the bed, that corner might have 'machine coordinate' X450, Y300 and 'work coordinates' X0,Y0

There's also offsets/fixture coordinates that could be usefully employed; http://www.cnccookbook.com/CCCNCGCod...orkOffsets.htm