Thanks for the help Jonathan, some good ideas there! Much appreciated!

Quick update;
The last couple of days have actually seen some progress with the first iteration of the bill of material is now complete although it's stiill going to need several more iterations before all the bugs are ironed out.


I'll try and get an extra set of some of the elements to use initially as hot swap spares with the option of making a 4th axis after xmas...
I can't find a good reason to keep the gecko G540, so that's gone and 1610 ballscrews instead of 2005 too.

The adjustable bed might wait until I need it! the potential solution was going to be a removable second bed that could be removed.. I would put some designs up at this point but everytime I try using google's Sketchup I must be taking a stupid pill! Just can't get my head around it yet.

more to follow. :)