Just want to make sure I understand...... This is in reference to a RF30 type round column mill: After I fit the vise to the mill and get it trammed, if I raise the head I dont have to re-tram the vise right? The jaws will still be perpendicular to the spindle even if the spindle has moved up and possibly over a bit. Not talking about tool changes, but between parts. For example, Say I have the vise trammed in and all is good. I make a part and move on to another project. Some time later I have a new project and new part to make. I realize I dont have enough spindle height for the new part so I raise the head. Now I have enough spindle height and put the part in the vise. At this point is the vise still trammed correctly even though the head moved up (increase in z axis) and possibly moved to the side a bit?