So I have a taurus pt92 that is blued that I desided to remove the bluing and make it matte metal. So people online said its simple. Soak the parts in vinegar until its gone and re finish it. Little did I know the frame was anodized aluminum so my pistol looked like a damn rainbow and I was freaking out thinking it was coroding. So I dropped it off at a gunsmith to have them bead blast and to a duracoat on it. So no pistol for 3 weeks and $175 towards my 1911 is gone. Where did I go wrong? I know anodized aluminum needs to be chemically or blasted off.