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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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