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| The Damascus Forum The art and study of Damascus steel making. |
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#1
01-21-2005, 02:02 AM
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Cold Bluing Damascus
Im wanting to try Blued Damascus, but wanted to ask and make sure I know how!
Do I understand right that you will etch then blue? And to highlight, lightly sand with hard backed 1000 grit or higher paper to "silver" the high spots? Do you want a fairly deep etch so that there is some depth between the patterns for the bluing to stay in when sanded? Whats the prefered brand of cold blue? Thanks in advance! God Bless Mike __________________ "I cherish the Hammer of Thor, but I praise the hand of God" 
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#2
01-21-2005, 08:09 AM
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Mike,
Thats the method I use on my damascus. You'll need to vary your etch depending on how coarse/bold your pattern is. Finer the pattern the less you need to etch it. I've been using Caseys Super Blue for quite a while and really like it. After etching I sand the rough edges and do a final sharpening on the edge. Then clean the blade and apply the Cold blue. I use WD40 (lots of it) to suspend the sanding particles and lightly sand with a small square of 1200 grit. Keep applying the WD40 as you sand. Hope this helps, Jon __________________ www.jonchristensenknives.com ABS Master Smith "If you always do what you've always done, you'll always get what you've always gotten" author unknown
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#3
01-21-2005, 01:45 PM
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Thanks Jon!
God Bless Mike __________________ "I cherish the Hammer of Thor, but I praise the hand of God"
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#4
01-26-2005, 10:46 PM
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Jon C..... I'm just finishing up--
Jon C, I'm just finishing up a 90 layer damascus blade of 1084 and 15n20, the pattern is fairly fine. I just hit the high spots with 1500 sandpaper, and I have a cool contrast of shine and (black) low spots. With your method will the black, (the high carbon, I suppose) turn to "blue"? Would it not need to be removed before it would take the "blue" treatment? Or at least need to be polished? Good question Mike! inquiring minds, you know! ---jon
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#5
01-27-2005, 07:48 AM
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I scrub the blade with comet and a toothbrush before applying the cold blue. Not sure if thats necessary, just the way I do it. This removes the black and leaves the background gray and thouroughly cleans the blade. I also scrub it with soap and baking soda.
The only blue I can see on the blade(after applying the coldblue) is on the 15n20 (high spots) which is taken off during the light sanding. Your left with a black background. Did I answer your question? Jon __________________ www.jonchristensenknives.com ABS Master Smith "If you always do what you've always done, you'll always get what you've always gotten" author unknown
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