- Joined
- May 5, 2001
- Messages
- 35
I would like to know if anyone knows how to gun bluing on stainless? I need ALL the details.
I know of two knifemaker who does it, but they are keeping their processes secret.
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Today I did my first gunbluing of plain high carbon steel and it worked like a charm.
500 grams Caustic Soda in 1 liter water in a steel bowl. Bring to the boil. Add 250 grams Limestone ammonium nitrate (LAN - fertiliser)
Lots of ammonia gas liberated.
Get to a fast boil and put in the ultra cleaned absolutely no grease or fingerprints steel and let it boil. You can take it out every now and then to check the progress.
When the color is to your taste, take it out and leave in linseed oil for half an hour. Let it drip dry, wash with hot water. Oil to prevent rust.
(You may want to leave it for a few hours so the blue can "cure" before washing it)
For a complete description go to
RSA Blades , go to the "embellishments" page, as there are several important safety measures you have to take.
I know of two knifemaker who does it, but they are keeping their processes secret.
--------------------
Today I did my first gunbluing of plain high carbon steel and it worked like a charm.
500 grams Caustic Soda in 1 liter water in a steel bowl. Bring to the boil. Add 250 grams Limestone ammonium nitrate (LAN - fertiliser)
Lots of ammonia gas liberated.
Get to a fast boil and put in the ultra cleaned absolutely no grease or fingerprints steel and let it boil. You can take it out every now and then to check the progress.
When the color is to your taste, take it out and leave in linseed oil for half an hour. Let it drip dry, wash with hot water. Oil to prevent rust.
(You may want to leave it for a few hours so the blue can "cure" before washing it)
For a complete description go to
RSA Blades , go to the "embellishments" page, as there are several important safety measures you have to take.