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Chemically blacking steel - help needed.

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Forum topic by YorkshireStewart posted 04-22-2008 01:10 AM 1206 views 0 times favorited 8 replies Add to Favorites Watch
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YorkshireStewart

1130 posts in 3981 days


04-22-2008 01:10 AM

OK – it’s not wood, but the steel components will be incorporated in a wooden project. I’m finally getting on with making my replica of the 1600 year old Roman plane that I blogged some weeks ago. I want to tone down the bright steel parts without risking distortion by heating them. Does anyone have knowledge a chemical brew I can use to black or blue them please?

-- Res severa verum gaudium - True pleasure is a serious business. http://www.folksy.com/shops/TreeGems


8 replies so far

View teenagewoodworker's profile

teenagewoodworker

2727 posts in 3848 days


#1 posted 04-22-2008 01:40 AM

you might want to try contacting David Marks. He knows a lot about all those different chemical concotions. You can email him from this site

View Cedrus's profile

Cedrus

110 posts in 3793 days


#2 posted 04-22-2008 01:52 AM

Greetings…from my old stained glass days I used copper sulphate and water…test first …it will turn things blackish..and caution as this stuff was originally used as poison! Here’s a good site
http://www.shootersolutions.com/gunbluingkit.html

-- Quando Omni Flunkus Moritati

View GaryK's profile

GaryK

10262 posts in 4068 days


#3 posted 04-22-2008 02:59 AM

They sell a cold black oxide solution here in the states. You could probably find it there also.

Just clean it with acetone and dip it for a while.

-- Gary - Never pass up the opportunity to make a mistake look like you planned it that way - Tyler, TX

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Douglas Bordner

4024 posts in 4143 days


#4 posted 04-22-2008 03:09 AM

There is a black Parkerizing solution available – I am going to use it on a couple of metal planes, but have been waiting for the weather to warm up as it involves heating a weak acid solution to a boil, and leaving the part immersed in the bath for twenty minutes. I have been told in no uncertain terms that this procedure will not occur in the kitchen. I’ll keep you posted.

-- "Bordnerizing" perfectly good lumber for over a decade.

View YorkshireStewart's profile

YorkshireStewart

1130 posts in 3981 days


#5 posted 04-22-2008 08:57 PM

Gentlemen, thank you. I knew the answers would be out there. Quite a few approaches to experiment with. I’ll be reporting back in the fullness of time.

-- Res severa verum gaudium - True pleasure is a serious business. http://www.folksy.com/shops/TreeGems

View BrianM's profile

BrianM

116 posts in 3832 days


#6 posted 04-23-2008 12:09 AM

Loctite

Yup, believe it or not but there is one requirement. The metal must be rusted.

Placing loctite on rusted metal starts a chemical reaction that turns the metal black— no paint needed.

I know of a person who makes outdoor sculptures with rusted parts and he mentioned to me that this is the system.
http://yard-garb.com/index.html
I have never tried it, but have seen the results.

-- There is no such thing as scrap wood!,

View motthunter's profile

motthunter

2141 posts in 3879 days


#7 posted 04-23-2008 12:59 AM

David Marks has a link on his site to a chemical company that sells just what you need.

-- making sawdust....

View F Dudak's profile

F Dudak

342 posts in 3890 days


#8 posted 04-23-2008 01:42 AM

Any trappers out there? I seem to remember boiling traps in water and red oak bark to blacken them.

-- Fred.... Poconos, PA ---- Chairwright in the making ----

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