El Beast - Initial design phase, comments and critique welcomed!

[Zeeflyboy]

quick and dirty assembly with the revised designs... no finer details worked out yet like seals etc

Changes:

- I've just brought the end plates within the work envelope of my current machine so that I can do them as a single piece, narrowed the bed slightly to allow the 15mm gantry mount plates to extend up to just beneath the bed surface.

- Bed taken down to 15mm to allow same clearance with slightly shorter gantry

- Gantry profile extended from 40x160 to 40x200, plus the extra 20mm of plate for spacing out the rails, back plate bumped up to 12mm.

- Moving rail Z-axis design.