at one time he and his cellmate had 22 shanks hidden in their light fixture. >> brandon siverly wouldaft knives out of nearly any object he found on prison grounds. >> if it was big enough to put in your hand with a little left over, it was big enough to be sharpened into a weapon. usually i would just keep it on me because it's no good if it's hidden somewhere. if somebody comes on to you and [ bleep ], you ain't got it on you, you can't tell him, hold on, let me go get my knife. thankfully, i've never had to use one. usually if somebody sees one, it's enough to keep them at bay. so you don't usually have to use it. i was prepared to use it. >> siverly was 17 years old when he and a group of friends broke into a home and beat and robbed the occupant. he accepted a plea bargain and was sentenced to 20 years. while at wabash, however, he received an additional four-years sentence for possession of a dangerous device, a seven-inch-long shank. >> that's a baby. that's a baby. before that, i always tried to make mine at least 10 inches long. that way i had plenty of handle room and plenty