>>> What did Christ Himself use?
Factory produced wafers?
Straw-man argument. The Last Supper was a Jewish Passover meal, and the Jews used unleavened bread.
Factory produced wafers?
While at a Passover Seder, all the leavened bread having been removed from the house as commanded by God through Moses, Our Lord Jesus Christ took piece of unleavened wheaten bread probably rather like a modern matzoh in his holy and sacred hands, and looking up to heaven to His Almighty Father said to His disciples, "Take, eat, this is My Body which is being broken for you. Do this in rememberance of Me."
What do you think he used?