What is the best way to blacken polished brass?

[cinedux]

Ideas please you 'restoration chaps'?

[Thegreg]

Birchwood Casey make a product which blackens brass. It comes in a small blue bottle. I’ve never used it been have seen it before.

Cheers
Greg

[cinedux]

Will give it a go!

[the logun-ator]

....ive used the above,its nor very good im afraid
lots of this stuff,bluing,blackening,paint strippers and the like available to joe public just havent got the same effect as the stuff from yesteryear

[crowbar]

Never tried it but a post on here ages ago recommended this ; SAICtoneDB from S.A.J.C. Southdown Abrasives and
Industrial Chemicals .

[Rapid7Nick]

Ive always used Phillips gun blue and have even blackened brass with it. Never liked the Birchwood Casey gun blue. To Me it's just watered down P?SS and doesn't really work that well.

[Troubledshooter]

I used products from this company when I made replica Webley oil cans, as I not only wanted to black the steel collar but darken the brass Valvespout assembly as well.

http://www.jpennyltd.co.uk/shopping/...tion.php?id=50

The Black Antiquing fluid contains Selenious Acid, and the Brown version contains Nitric Acid.

[--ped--]

something I've looked into and a process called ebanol c is the best way
my mate showed me something called black magic ant that seemed to work and I'm told that oxy plus will black brass if it is boiled in it
I've not tried the oxy plus yet as i'll need to do it down the yard as it foams up a bit I was told