ChrisVJ, that was the procedure but it was discontinued because there were TONS of forbidden articles to send to the hold for each flight. Besides, the security check is too late: it is not handled by the company any more. And since the crew aren't allowed to have forbidden articles, we cannot keep it in the F/D and give it back at destination like we used to do.
And to confiscate a plastic knife is not sillier than the plastic cosmetic pencil sharpener that they took from me (in uniform) in MIA.