Update.
Finished building the table. Overall took about 8 hours with the help of a friend. This thing weighs a ton.. al least 500lb without any MDF etc.
Still waiting on my servos to arrive (geez airmail is slow)
Received my Z rails and bearings. X & Y are on order from Germany and should arrive 3 days or so.
Completed most of my electrics except for the DC power supply (Ynneb )

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Will post a number of pics in the next day or so when my friend copies them to disk for me.
Attached is a drawing of the Gantry setup (side view) and this week I'll start fabricating the Y & Z axis.
The goal this week is to totally finish the bench (painting etc) in readiness to start fabricating the gantry next weekend.
This is fun.. what better way to spend your 2 week vacation...
cheers