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Old 16th October 2021, 10:15 AM   #46
mariusgmioc
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Join Date: Sep 2014
Location: Austria
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For the last 10 years I have used exclusively Nital 4% for etching wootz.

Now I have run out of Nital and as it proves to be almost impossible to get in Europe, I had to switch to Ferric Chloride.

Recently, I etched the first blade with ferric chloride and got very good results, comparable with what I usually got with Nital.

Here are the steps I had followed:

1. Polished the blade up to mirror finish (grit 2500).

2. Cleaned the blade thoroughly with white spirit.

3. Etched the blade with ferric chloride (about 30%) by swapping it with cotton swabs soaked in the solution. Applied it uniformly with repeated, even and fairly quick passes to make sure the solution is evenly applied on the whole surface. I changed the swabs a few times and carried out this process for 3-4 minutes, until I got a uniform, dark patina.

4. Rinsed the blade thoroughly under flowing water.

5. Dried the blade with toilet paper and hair drier (on low heat).

6. Left the blade for 24 hours to completely dry out and continue the oxidation process.

7. Cleaned the residual golden oxidation that appeared in parts with very gentle passes of cotton swabs with Pre-Lim.

8. Cleaned the blade with white spirit and let it dry for 24 hours.

9. Applied protective layer of Renaissance Wax.

PS: Unfortunately, in my opinion instant coffee has very limited applicability. For instant coffee to work, it needs very long times, and the blade has to be immersed in the solution. This works fine for an unmounted blade not for a fully mounted knife, because you cannot fully immerse in coffee the whole knife/sword for hours without risking catastrophic damage to the hilt and mounts. And if you don't fully immerse the whole knife/sword you will end up with completely unetched spots around the front bolster/ricasso.

Last edited by mariusgmioc; 16th October 2021 at 07:22 PM.
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