I have heard of people spraying WD-40 (on the HAMB) over paint when it is wet to get a hammered appearance. I would have to try it myself first prior to endorsing it. Sherwin Williams has a line of paints called Dimenso that offers a hammered appearance.

The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me