I lost my very expensive swiss army knife almost a year before one of our trips to Disney. When we got to the scanner, they pulled my purse and repeatedly put it through the xray. They would not even talk to me. I had no idea what the problem was. After at least 8 times, they took it to the side and put some of those cloth squares in it. I'm not sure what they are for but nothing happened. So, back to the xray one more time before they decided to clear the area and search by hand. They found it... my swiss army knife. Apparently, it had been hiding all this time under the seam at the bottom of my purse. At first, I was happy that he found it. But then I quickly noticed he was not smiling. He was not going to let me board. My hubby and the kids had already gone ahead without me. I had to beg and cry to get on the plane. I, of course, had to let them confiscate it.
I would not take the chance on if they find it, because you may not be able to board the plane at all.