Machinist

[J White]

Lets start with this. This is in house work for our press department.
They bring me this extrusion punch, it’s picking up metal from the steel parts they’re forming with it. They want an additional ten thousandths off the back clearance, but don’t touch the land or face. Ok. That leads to this.
Taking small amounts with the cbn inserts, we run it dry rather than coolant flowing, thus the open door pictures. Roughing at .006 per cut with a finish pass at .002
This thing is about 66 rockwell C, a good file won’t even scratch it.

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