We seem to have an accountability issue when it comes to operators building defective product. Currently we are putting a piece of masking tape with the assembly, work order, and operator initials on our black trays at the end of the reflow oven. I have noticed that as the boards progress through SMT
and other areas, those pieces of tape with initials on them seem to get mixed up or end up getting replaced with someone else's (other areas) label.
My suggestion to my boss is that we give each of the operators a small rubber stamp with their own # on it. Instead of putting their initials on a removable piece of masking tape, they will put a discreet number somewhere on the board.
Does anyone have any experience with this? Can you give me the name of a company that produces stamps for this purpose ?