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roll tap lubricant

What lubricant should I used to roll tap extruded aluminum in the 4-40 to 1/4-20 range?

Thanks in advance.

Chuck P.

Reply to
Pilgrim
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I just use plain old oil for #8 and #10 but think an EP would be easier on the torque. ...lew...

Reply to
Lew Hartswick

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