the chinese need to take lessons from you
I have used a nitric acid solution diluted to about 20% to brown items as well in a similar way.
For that brown rusting look.
I always have baking soda washed afterwords to kill the acid even when doing cold blueing.
Never knew about the Hydrogen Peroxide though.
Watching your videos long before we joined this forum gave me the confidence to start restoring firearm’s parts. You’ve just taken it to the next level. You Sir are a true craftsman.
Thank you all.
You have great eye for detail.
Your a metal genius…what an amazing video