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Cast Iron Cleaning and Seasoning Help With and Tips & Techniques For Cast Iron Cookware Restoration

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  #31  
Old 10-24-2016, 05:12 PM
Doug D. Doug D. is offline
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Default Re: Nitty gritty details about Easy Off HD method??

Quote:
Originally Posted by W. Hilditch View Post
The “crusty spots” are pure carbon which an e-tank won’t remove unless there is rust underneath them. Scrubbing the carbon off followed by vinegar is the best way to remove pure carbon.
If that were the case, electrolysis would not have cleaned the dozens of crusty pans I restored before I had a lye bath. There was no rust under the crud on them, not to mention it would be hard to imagine such a scenario occurring. Having said that, there are times that some of these remaining carbonaceous "warts" just don't seem to want to budge, no matter how long you leave them in the tank. Better to scrub them off and move forward.

See the first photos of a crusty, not rusty, pan being cleaned with electro near the bottom of this page: http://www.castironcollector.com/electrolysis.php
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  #32  
Old 10-24-2016, 05:34 PM
W. Hilditch W. Hilditch is offline
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Default Re: Nitty gritty details about Easy Off HD method??

I think I said pure carbon. Not carbon mixed with oxygen and other impurities.

Hilditch
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  #33  
Old 10-24-2016, 05:46 PM
SpurgeonH SpurgeonH is offline
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Default Re: Nitty gritty details about Easy Off HD method??

I've had some success getting off some stubborn crud with electrolysis. I wasn't sure if it was the electrolysis which loosened the crud or the fact the pan was soaking in a water/washing soda solution for a few days ... but it seems to work. My best guess, from my limited-chemistry mind, was the electricity was breaking the bond between the carbon and the surface of the iron.
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  #34  
Old 10-24-2016, 06:22 PM
W. Hilditch W. Hilditch is offline
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Default Re: Nitty gritty details about Easy Off HD method??

Spurgeon, we know positive electricity breaks the bonds of carbon on sacrificial graphite, steel and cast iron anodes; which is why they diminish in size one molecule at a time. On the negative side they break up impurities and oxygen bonds, but Iím not sure about actual carbon to iron bonds. That is why there is no ascertainable damage to cast iron after an extended time in an e-bath. So what you are experiencing may be the further disintegration of left over impurities and the soap doesnít hurt. This is chemistry, not pseudoscience.

Hilditch
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  #35  
Old 10-24-2016, 06:52 PM
SpurgeonH SpurgeonH is offline
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Default Re: Nitty gritty details about Easy Off HD method??

My theory, (and like I said my chemistry skills are limited) is that carbon is neutral and is attached to an iron pan which has a negative current running through it. Wouldn't that make the carbon be a negative and therefore be attracted to the positive charge of the "sacrificial steel"? I would call my high school chemistry teacher, but she recently passed away. Great teacher, but I missed half a semester with a bad case of mono. (That's my excuse anyway)
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  #36  
Old 10-24-2016, 07:10 PM
W. Hilditch W. Hilditch is offline
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Default Re: Nitty gritty details about Easy Off HD method??

I donít think so. However, Iíve only stayed at the Holiday Inn a few hundred nights.

Hilditch
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  #37  
Old 10-25-2016, 02:03 PM
JamieC JamieC is offline
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Default Re: Nitty gritty details about Easy Off HD method??

I tried scrubbing them again with my scrubby and hot water and while I got a bit more off, it wasn't much. I don't have the ability to set up an E-tank, and I don't think I'm going to go through the lye process again. It would be nice to get it off, but since I really want to just start using these pans and I'm not a collector, I think I'm going to leave it on and enjoy the character spot, hoping that one day as it gets seasoned better the color difference will be less noticeable and I'll know that I'm making good progress.
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