1) WOOLITE IST KRIEG. Your precious metal shirts are meant to be handwashed, so as to preserve the ink prints and the integrity of the fabric. Woolite is expensive, but it is an investment in your metal cred. In recent years, WOOLITE DARK has been introduced, formulated for dark clothes exclusively. USE IT! Immortal would endorse no less.Read on for additional wisdom, including the timeless advice, "AIR DRY ONLY. Dryers are false metal."
2) COLD WASH ONLY. Allow your clothes to soak in waters as cold as the rivers of Blashyrkh itself, without agitation. HAND WASH, or use the "hand washables" cycle on your washing machine. Your precious metal shirts get enough violent agitation when you're wearing them in the mosh pit.
(Image: Derek (Cast the Stone), a Creative Commons Attribution photo from Lorri37's Flickr stream)
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.