There is a sealed fluid filled reservoir in it…I’m not sure how well that would hold up to repeated rotation. Plus it might introduce air bubbles into the tube, which would have to be allowed to be pumped out each time you turned on the machine. (Might want to keep it horizontal. You can put it on a sliding shelf that you can pull out from under a table though…one of our guys, @PrintToLaser, has a beauty that he built for his shop.)
Nice slides soution. I’ve been looking at heavy duty lazy susan bases too, to allow me to make a way to rotate the GF in place for pass through. I almost never want to use the passthrough all the way through, and more likely use it by hanging material out of the GF front. It’d be nice to have the option.