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Swarf&Sparks
07-02-2008, 07:48 AM
I often see requests on this forum from the modellers and gunsmiths, for gun blue, or rust blue recipes. FWIW, from an original treatise....
http://www.hms-victory.com/index.php?option=com_content&task=view&id=57&Itemid=88

"To one gallon of vinegar add a quarter of a pound of iron rust, let it stand for one week; then add a pound of lamp black and three quarters of a pound of copperas; stir it up at intervals for a couple of days. Lay five to six coats on the gun with a sponge, allowing it to dry well between each application; polish with linseed oil and soft woollen rag; it will look like ebony."

FYI, "copperas" = ferrous sulphate

The HMS Victory site is well worth a look in its own right.
Cheers, Lin

Swarf&Sparks
07-04-2008, 08:35 AM
YOD, fwiw, bump

wierdscience
07-04-2008, 09:01 AM
Good site,that's one more gun blue recipe to add on the list.

rockrat
07-04-2008, 09:38 AM
Fantastic, now if I only had a pound of lamp black. :D

Honestly, this is good info for metal treatment. I seem to remember a link around here somewhere for a solution that worked well in the photos but would deliver a fellow a visit from the ATF due to the purchase of specific chemicals in mass quantities from the local farmers supply.

Saw a t-shirt once that said - Alcohol, Tobacco and Firearms... Who's bringing the chips?

rock~

COMP
07-04-2008, 09:39 AM
Hmmmmmmm where do in get a pound of rust

lazlo
07-04-2008, 10:00 AM
Fantastic, now if I only had a pound of lamp black. :D

Isn't lamp black essentially carbon?


Hmmmmmmm where do in get a pound of rust

It's a hillbilly recipe -- rust = iron oxide = ferric oxide = Fe2O3 (red oxide) = Fe3O4 = (black oxide).

Ferric oxide is available any any chemical supply house, pottery supply, theater supply store, or Ebay, of course :)

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230266715476


It will look like ebony

Wow, that's worth a try!

Swarf&Sparks
07-04-2008, 10:02 AM
Yup, and if you can't find lamp black, just pick up some copier/laser printer toner :D

lazlo
07-04-2008, 10:04 AM
Yup, and if you can't find lamp black, just pick up some copier/laser printer toner :D

That's bloody brilliant Lin!

Have you tried it? For the cost of the materials (practically zero), it sound like it's worth a try. I'd love to have an "ebony" coating for stuff like the BXA toolholders I made...

Swarf&Sparks
07-04-2008, 10:13 AM
No Rob, can't speak for it as I only saw it on the "Victory" site t'other night.
Thought it would bear repeating here though :)

Another one of my pet projects is to turn an authentic naval gun.
I have the stock, just not the time.
If you try it, please let me know the results.

COMP
07-04-2008, 10:22 AM
Isn't lamp black essentially carbon?



It's a hillbilly recipe -- rust = iron oxide = ferric oxide = Fe2O3 (red oxide) = Fe3O4 = (black oxide).

Ferric oxide is available any any chemical supply house, pottery supply, theater supply store, or Ebay, of course :)

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230266715476



Wow, that's worth a try!

Hmmmmmmmmm :D

JCHannum
07-04-2008, 11:11 AM
From the sound of it, it is more of a coating than a chemical or rust blackening. The final application of linseed oil would appear to be a sealer of sorts.

Most chemical bluing and blackening involve multiple applications with burnishing in between. This process applies several coats, which are allowed to dry and then sealed with linseed oil. It could be a good treatment for cast or wrought iron that will be exposed to the elements, but I doubt it would be a suitable substitute for readily available cold blue materials.

torker
07-04-2008, 08:37 PM
Hmmmmmmm where do in get a pound of rust
That's easy... buy an old mid 70's Chevy pickup... drag it home and kick the fender. Truck will turn to pure rust dust... sweep into dustpan and you have enough rust for everyone on the board... :D

oldtiffie
07-04-2008, 08:51 PM
Thanks Lin and Russ.

It s variation on the theme:
http://en.wikipedia.org/wiki/Ashes_to_ashes

"Ashes to ashes rust to rust;
If the booze don't gey ya, the Devil must"

Hmmmm.

I'm feeling a bit rusty today - what a worry!!

Chipslinger
07-04-2008, 09:06 PM
I think that goes...

Ashes to ashes
Dust to dust,
If it weren't for Pu$$y
Our peckers would rust.

deltaenterprizes
07-04-2008, 09:19 PM
I have been using a formula I found that is a mixture of lye (from hardware store) and potassium nitrate (stump remover from Lowes) and it works great!

lazlo
07-04-2008, 09:23 PM
Hey that's cool -- I have both right here. What's the mixture?

deltaenterprizes
07-05-2008, 11:23 AM
Try this link :http://www.homegunsmith.com/cgi-bin/ib3/ikonboard.cgi?;act=ST;f=22;t=9037

lazlo
07-05-2008, 11:34 AM
Try this link :http://www.homegunsmith.com/cgi-bin/ib3/ikonboard.cgi?;act=ST;f=22;t=9037

Ah, that's hot blue. I'm not sure SWMBO will dig the boiling lye... :p