Make a small fire in the woods.
Throw your metal in the flames.
Wait.. This is a good time to enjoy
your refreshments.. If you brougt any.
Hammerize metal.. This is where I regret that i didn't buy
that mini anvil i saw at the thrift store.
Repeat 2 and 4 for a while.
Dunk the hot metal and enjoy the sizzzling sound it makes.
And presto, you will have some texturized and
blackened metal pieces.