Mismachine

The discharge of the grievant, which is being arbitrated, was precipitated by the charge that the grievant mismachined a rail, compounded by the fact that he denied responsibility for the condition and became hostile and abusive when confronted with the situation.

Yes, I did mismachine that part - and it cost the company money. But I'm human and I'm entitled to my mistakes.

The process also makes possible the salvaging of expensive titanium parts that have been mismachined or have worn through use.