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Cold Blue

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Chris Short 117/03/2019 15:20:50
6 forum posts

i would like to cold blue some of the workshop tools I have made

What make of solution do you recommend from your own experience and where can I get it from

thanks

Mick B117/03/2019 15:39:05
1074 forum posts
60 photos

The best I found was G96 gun bluing paste. Wash everything in very hot detergent water and apply the paste whilst metal's still hot to the touch. Small paintbrush works quite well. Wash off thoroughly and oil up lightly. Wear rubber gloves throughout.

There's also KoldBlak. I found that worked, but less well, and more faffing.

 

Edited By Mick B1 on 17/03/2019 15:39:45

Plasma17/03/2019 16:55:07
282 forum posts
38 photos

I have a few old tools that have a really decorative pattern of blueing.

They look like the marbled paper you see in expensive books.

I've often wondered how that was done as it looks so effective.

AdrianR17/03/2019 17:11:45
226 forum posts
19 photos

Have you read the wiki page It describes several methods, one, Colour Case Hardening sounds like it could be your marbled paper effect.

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