Background
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. Leveling and Squaring Your Mill
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
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