to actually cutting polymer clay canes without them *@$^@) crumbling everywhere??? I bought some ready made canes today and want to use them for the egg stuffer swap for the tic tac toe game markers ... so I warmed them thoroughly (very thoroughly - I say on them for 15 minutes while I made fimo poison dart frogs

). When I cut them, the outside edge on the bottom (no matter which way I turned the cane) would crumble every time. The clay was warmed all the way through, the center was warm to the touch when I cut into it. I tried a serrated knife and a regular knife. Do I need a blade instead of a knife? Help! I bought 6 canes and cut through 4 and they are not very pretty. I am hoping to salvage the last 2 to make very nice rounds!