A piece of cake. Literally. A wedge-shaped box that can be used to store pieces of cake. The box consists of an upper and a lower part. The upper part is the cover. The lower part is a “flat pack” that doesn't need glue, because it will be locked by cover. By default, the cover is 5% larger then the bottom but this can be adjusted in the expert settings.
The angle is a measure for how big a piece of cake can fit in. Look in the figure if you don't know what to enter here. For example, an angle of 30 is large enough for 1 piece from a 12-piece cake.
The length is the length of the piece, which should be about half the diameter of the complete cake. Be sure to add some allowance here.