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!
star 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.
star Terry Watford Rust Blue Customer
That blue is the deepest color I have ever seen! It was so easy. Great product.
star 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!
star Terry Watford Rust Blue Customer
From The Rust Blue Blog

Customer Testimonial

Was very pleased with your product. This was the first run for me. It is the answer for the resurrection of vintage scatter guns. I used your steam pvc method. Did the prime cycle, carded, processed an other coat. I then did 2 ten minute steam cycles with carding at the end of each one. [...]

Rust Bluing Woes

It is inevitable that you eventually run into some problems when rust bluing. Most can be traced to surface preparation and technique. The remainder fall into improper solution used and boiling/steaming issues.   Surface Preparation I always sand/bead blast or use silicon carbide papers to polish the metal prior to bluing and never have any [...]

Why should you steam rather than boil?

Did you know that nearly all commercial and military arms production during the day employed steaming rather than boiling for rust bluing? It’s true. We’ve always been told in the majority of gunsmithing books that we should boil.  That is what has kept most people away from rust bluing. Pros and Cons of  boiling vs [...]

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