It is generally not recommended to cut completely frozen meat with a meat slicer, as a slice of frozen meat fresh from the freezer is extremely hard and will damage the meat slicer blades. To cut frozen meat with a meat slicer, you must first thaw it or defrost it for a while so that it is only 20% frozen. At this stage, the easiest way would be to use a meat slicer to cut the meat to the desired thickness.