Some of Rust Blue's unique features...


Rust bluing steel produces the highest quality, best appearing, and most durable finish known.


Rust blue is the authentic black iron oxide finish used by professional gun makers.


Proven formulas that can accurately reproduce the correct finish on your collectible firearm.


Each order is freshly weighed, mixed, and promptly shipped; resulting in the most potent product possible.
The Authentic Bluing Solution

Rust Blue American

Modified formula omitting mercury salts as a component. It still produces a fine blue as seen on US Krags plus early Springfields and 1917 Enfield’s. This formula does not require neutralization to prevent after-rusting. Complete working instructions included.

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What people think of Rust Blue...

That barrel brake came out beautiful! Dark and deep! Thank you!
Dennis Henthorne Rust Blue Customer
I can’t believe that old gun came out so well. I had written it off! Rust Blue was easy to apply and the directions were spot on. Thanks for a great product.
Terry Watford Rust Blue Customer
That blue is the deepest color I have ever seen! It was so easy. Great product.
Ronnie Hill Rust Blue Customer
The steam pipe is the ticket for an inexpensive way to convert the rust to rust blue. It only took three passes!
Terry Watford Rust Blue Customer
From The Rust Blue Blog

Why do I get a copper color when I apply Rustblue?

Once in awhile I get feedback on this. I have experienced it myself. Most of my formulas contain copper sulfate. I experimented and discovered there are two major reasons for this. The first is applying too much solution. The second is electrochemical.  If you are applying Rustblue in low humidity there is a strong potential […]

Sweat box/dryer design

Here is a simple device you can build to dry and steam ripen your rust blueing project. It s a simple cardboard moving wardrobe with a a flap door cut in the bottom. This allows the introduction of a mild steam source or heater. It will greatly reduce rust times and produce superior work. Simply […]

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