Had to redesign my "Green Light Gantry" mechanical kit a few more times.... going to a really big size (here are pics of 2 different 4'x4' GLG's at different alpha test sites) showed that some changes were needed. Now the redesign is back ported to the smaller units (I expect most production units will be 18"x24" or smaller.
The smallest one so far (for die making) has a travel of only 4"x6" (but it still weighs about 50 pounds!).
Just thought you'd be interested in the progress.....