Measure and Fix Spindle Runout - The Tool Life Killer

What Is Spindle Runout?

Spindle runout, or tool runout, as it can also be called, is the inaccuracies that cause a tool (in a mill) or workpiece (in a lathe) to spin off the ideal axis. It’s very bad for tool life, so it’s good to know more about it.

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Fab Lab Skill Builder: Swing Indicating, Pt. 2

Here's a Fab Lab Skill Builder video tutorial on how to use a dial test indicator to locate the center of a square or rectangular workpiece.

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Fab Lab Skill Builder: Swing Indicating, Part 1

  Swing Indicating may be "old hat" to more than a few readers of this blog, but we find in our CNC Fundamentals Workshops that many new and self-taught machinists have never used the technique before.  Here's a brief Fab Lab tutorial on how to indicate the center of a hole.

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