You can use dental floss; with a long piece of floss wrapped around both index fingers, pull it through with a sawing action, while the cake is still warm.
Then, put the cake in the freezer. Do not try to separate the layers at this point. Freeze until firm, best if left in freezer over night. Remove from freezer and let warm for about 20 minutes. Now you will need a large, flat cookie sheet for the next step. You can work the cookie sheet between the cake layers as it defrosts. if you reach a hard spot, let set for a few minutes. Soon, you will be able to get them apart. Leave one layer on the cookie sheet, [or you could probably use a 16" cardboard circle} ice the bottom layer, then slide the top layer on. You have to work quickly because you want the cake to be firm when handling it, otherwise it may fall apart on you. Hope this helps.
Sep 10, 2009
cutting by: Anonymous
Yes you can torte a 16 inch cake. I usually slice it through the center and then slide a cake board between the two cakes and lift the top half off. Fill it with frosting and then slide the cake off the board and back on the bottom cake.