I need some help here. I am trying my hand at rust blueing. I clean and degrease with casey's cleaner/degreaser then polish to bright with 400 grit wet/dry paper. I apply Laurel Mountain forge barrel brown and sit aside to rust and the metal turns blue with coppery streaks. I am applying the rusting solution with a clean 100% cotton pad in one continuous pass. I can't figure out what I'm doing wrong. Can anyone help?
Dave