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7th June 2012, 06:31 PM
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#1 | |
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Member
Join Date: May 2010
Location: Dortmund, Germany
Posts: 102
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Quote:
I built a test-setup large enough to contain a rusty crow-bar. As power-supply i used a computer power supply that is able to deliver 5A @12V. The counter electrode was a steel-band roughly the same length of the crow-bar and placed parallel to the crow-bar. The electrolyte used was sodium carbonate. And this is what happened: The power supply immediately switched off. I guess it detected a short. So i started pulling the setup out to see at what length of crow-bar could be cleaned with my setup (don't try this at home!). Turns out 40cm of crow-bar can be cleaned with this rather primitive setup. Putting in a high-power resistor that limits the current to 5A (2.4Ohms) would probably allow larger items at the cost of speed and isotropy. However, i didn't follow that path because i didn't manage get the hilt off and i didn't want to stain the hilt with the rather nasty electrolitic solution. So i went to the classic approach with low concentration citric acid...  The results can be seen in the attached photos. The blade lamination that is not really visible on the photos shows a small edge around a uniform core. |
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7th June 2012, 07:10 PM
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#2 |
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Member
Join Date: Aug 2007
Location: Germany, Dortmund
Posts: 9,207
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Good result!
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7th June 2012, 08:19 PM
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#3 |
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Member
Join Date: Apr 2011
Posts: 180
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are you going to give it an etch also? Although actually I do not see any 'activity' of lamination it might anyway improve the metal shine/appearance of the blade, and who knows . . . .
(am sure Sajen was about to ask the same?!?  )
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7th June 2012, 08:42 PM
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#4 | |
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Member
Join Date: May 2010
Location: Dortmund, Germany
Posts: 102
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Hello Indianajones,
As i wrote i gave it very long etch during cleaning about a year ago. The lamination was easily visible back then... sadly i didn't make any photos. Then i scrubbed it with steel wool and oiled it. Now the lamination is barely visible with the eye and very difficult to capture in photo. But i will etch it again when i have time. Quote:
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Hybrid Mode
