I used to get broken Jack hammer bits from a friend who works at a rental out fit for Steve to make these out of. About a year ago I took Steve a Fort Miegs ax and a larger polled belt ax and asked him if he could make copies in Damascus. After waiting for quite a while I went to his house and he announced that he had retired for health reasons!!...IF I understand his process, He layers two types of steel together and forges it in a gas fired forge. After shaping the heads he drops the heads in an etching solution,,,,,,Ed