Check out the historic garnish bolts Jymm Hoffman is forging with Say-Mak hammers. He had bases and dies made domestically.
Currently there are about 300 Say-Mak air hammers in use in the United States. We are providing technical support for these machines and carry an assortment of spare parts. What we don't have in stock we can order from the manufacturer. Please inquire for details. Dies from Turkey are $500 per set and made from 4140 steel. American made S7 dies $800 per pair.