Ballendo, the pictures he linked to are my machine. It IS a torsion box, I just didn't have the skins attached in the pictures, as I was just test fitting everything together. I have a question for you regarding weight. Is it better to have the lightest possible gantry, as was my original thought, or would a heavier gantry help to dampen some of the vibrations. I know the lighter one will have faster acceleration, but I also thought about filling the torsion box with possibly sand to absorb the vibrations. I'd like to here your thoughts on this, as you seem to have been around the block the most times.
Thanks.
Gerry