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Number of SSV's:

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Number of Solutions:

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Suspected Sources of Variations (SSV's)
Tool for pinpointing
Technical solutions
Work centers
OBS
Keep work centers clean and lubricated
Work centers
OBS
See that footstock spindle is clean and tightly seated
Work centers
OBS
Work cetners must fit taper of workcenter holes
Work centers
OBS
Centers in work must be deep enough to clear center point
Work piece material high hardness
PC
For hard workpiece materials : anneal workpiece material before tapping , reduce speed
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