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1st June 2013, 05:20 PM | #1 |
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Join Date: Mar 2005
Posts: 373
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Similar problems
Hi, This sword had not been etched previously and showed no pattern. A phosphoric etch showed promise, but on cleaning nearly all contrast faded away. If your etch is too concentrate you get that blacked scorched effect.
I found on such low contrast I had too go with that and polish lightly with Brillo pads both regular and non scratch followed by Maas a polishing compound and lightly stop at desired effect. currently still working on this one to even it all out. Keep going but watch out to avoid excessive pitting. Steve Oh, when polishing out after etch wash blade frequently with a good grease cutting soap material polished off will give a false contrast. Last edited by archer; 1st June 2013 at 05:25 PM. Reason: more ifo |
1st June 2013, 05:21 PM | #2 |
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Join Date: Feb 2010
Location: switzerland
Posts: 298
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hello together
the etching of Wootz I use ferric III chloride and proceed as follows: Polishing the blade with sandpaper to 600 Clean the blade with soap water cleaned with acetone Try concentration of the etching agent. Coat the entire blade stop immediately, cleaned with water repeat this process repeatedly until correct score is ok. I had already wootz, which was dark gray now! More dilute etchant. this wootz was closing very bright! was an Indian Kard blade. |
2nd June 2013, 01:56 PM | #3 |
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Join Date: Jul 2011
Location: Nashville
Posts: 314
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The Windex I used say it has ammonia-D, I used the same process with 2 other knives one wootz and one not, with those the result was normal. I guess my next step if using Brasso or something to try and polish it.
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3rd June 2013, 05:03 PM | #4 | |
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Join Date: Dec 2004
Location: Virginia
Posts: 520
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Quote:
MSDS here http://www.btps.ca/files/PDF/MSDS/Windex_Ammonia-D.pdf Even the "superconcentrated" only has 0.1 to 1.5% http://www.centralstatesbus.com/MSDS...oncentrate.pdf No idea why it worked before and did not now unless the etching acid was a lower concentration before and the alkaline in the windex was enough to neutralize the lower concentration acid. Still just a guess. Last edited by RhysMichael; 3rd June 2013 at 05:22 PM. |
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4th June 2013, 12:22 AM | #5 |
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Join Date: Mar 2005
Posts: 373
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Another etch in progress
Hi, A second etching victim this one is again low contrast. Etching produced the blackish areas probably where this extremely thin blade was tempered for strength. This is second or third etch per each side. At first it came out very crystalline looking. I cheated and besides the polishing compound used the well worn 1500 and 2500 sand paper used initially to polish the rusty blade. Go slow without to much pressure. You might give us some photos, good luck. Steve
Any future etching will be with a more diluted etch. |
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