C.F. sheets (short for “cut and folded sheets”) are sheets of wax that are used in beekeeping to create new comb for honey bees. They are usually made from a blend of beeswax and other waxes, and are cut and folded into a frame-size shape that can be inserted into a beehive. The bees can then use the C.F. sheets to build comb and store honey, pollen, and eggs. These sheets are commonly used by beekeepers to provide a foundation for the bees to build their comb on, as it speeds up the process of creating new comb. They are also preferred by beekeepers as it reduces the amount of wax that is needed to be harvested from the bees, and it ensures that the comb is built in a uniform pattern.