...
This page covers adjusting spindle tram on a Tormach mill. Spindle tram being out is characterized by a step being evident between passes. Spindle tram is a measurement of how much the spindle angle is different from being perpendicular to the table. Since the measurement is an angle, the step seen will be larger if a larger tool such as a fly cutter used. This page is relevant for Tormach mills only.
NOTE: It is highly recommended to check machine leveling before adjusting spindle tram.
Tools
Indicator with resolution of .0005” or less
Magnetic base or indicator holder with rob able to be clamped in a tool holder
Metric hex wrenches
Shim set (plastic shims recommended)
123 or gauge block
...