This is the new gantry design. I have moved the x axes to a vertical plate. I also changed the gantry beam to a 3" x 8" 3/16 wall steel tube as per comments by awerby on strength. I have also spaced the berrings further apart for the z axes. This still gives me 11" travel on z axis. I also spaced the y axis bearing 2" further apart.

please advise if these improvements would work well. greggv,SteveWill,awerby