Re table height & movement on combo mills, interesting question. No experience with them but I suspect the table must be able to rise somewhat close to the horizontal output center line. But even so, assuming the smallest cutter heads you would likely have mounted on the shaft + vise + work etc. I cant think of a good reason why it would need to be super close to center. I was told ?true? that horizontals preceeded verticals, but that may not mean much. Sometimes you see old machines that appear specialized in the modern world, but they had specific roles in production which are now done differently. Here's some machines to compare proportions. Almost looks to my eye that the spindle bottom is relatively close to the HZ output center, but more the HZ is higher than yours? The Acra has dovetails that run right to the bottom. The Accutech is interesting but I've never seen one in the flesh