thanks for the comments gents.

however, although id love to build a machine 3x3. I cant afford too!. Im simply make the biggest I can whilst maintaining my marriage :D

anyway, done a bit more on the design. but those bearings look mighty small for such a large spanning gantry....

might have to have a re-think...

what do you guys think?Click image for larger version.  Name: table.png  Views: 1425  Size: 55.7 KB  ID: 7060