Roll fondant 1/8 in. thick on surface lightly dusted with cornstarch. To ensure that panels line up at bottom, make 3 panels at a time; cut a piece 3 1/2 in. high x 14 in. wide for 9 in. cake, cut a piece 3 1/2 in. high x 15 1/2 in. wide for 15 in. cake.

Position pattern at top left corner at a 45° angle using Angle Guide Pattern. Using smallest square Cut-Out, cut squares between lines on pattern at its bottom edge. Remove cut squares.

Move pattern below cut area and repeat process. Continue until entire panel is cut out.

Cut strip to desired width of each hexagon side. Repeat process to create a panel for each side.