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Old 08-04-2009, 06:08 PM   #1
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Default Are plasma cutter burns on kegs sanitary?

I have a keggle with burns from a plasma kettle all over on the inside. I have tried barkeepers friend, and boiling. I am going to have to grind it off to get rid of them. Do you think I could just leave it on and be able to boil, and not have to worry about health, or flavor problems?


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Old 08-04-2009, 06:39 PM   #2
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I would grind them off just to keep bacteria from gathering around them.


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Old 08-04-2009, 06:48 PM   #3
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Kettles are all preboil so I wouldn't worry about bacteria too much. When you say burn I think pit where material was removed, but then you say grind it off so I'm thinking slag pile. If they are slag piles I would grind then sand then down so it looks better. If they are pits then trying to grind them out could make the material very thin in that area. If they are pits I would just leave them and brew away. Either way until the surface is polished you havent removed the chance of bacteria growing. Now back tot the first sentance. This is breboil not post boil so you are safe to just leave it.
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Old 08-04-2009, 07:02 PM   #4
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I don't know what a slag pile or pit looks like. so here is a picture. It looks brown, but it is actually black. It just looks like black melted metal black balls all over it. Kinda like moles, or boogers, except black.

[IMG][/IMG]
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Old 08-04-2009, 07:11 PM   #5
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Originally Posted by beerthirty View Post
Kettles are all preboil so I wouldn't worry about bacteria too much. When you say burn I think pit where material was removed, but then you say grind it off so I'm thinking slag pile. If they are slag piles I would grind then sand then down so it looks better. If they are pits then trying to grind them out could make the material very thin in that area. If they are pits I would just leave them and brew away. Either way until the surface is polished you havent removed the chance of bacteria growing. Now back tot the first sentance. This is breboil not post boil so you are safe to just leave it.
Beerthirty is right...you boil in your kettle which kills anything off in that brew so sanitization is not an issue on the kettle side of the process.
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Old 08-04-2009, 07:17 PM   #6
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Light hand sanding with 220 grit sandpaper if there are no globs adhered to the surface is all it looks to need.
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Old 08-04-2009, 07:38 PM   #7
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take the flat tip of a file and tap it with a little hammer trying to chisel the little beads off thay should just pop off there. but like others had said this is pre boil it does not matter ,, little pits and what not are a problem for chemical cleaning and steralising becase the cleaners only clean the very top layer .So if you have a hole with organic crud in it, the surface will be sterilized and the back will still have bugs in it.

on a boiling kettel non of this matter because the whole unit will heat up and kill everythign in and on the kettel.
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Old 08-04-2009, 10:42 PM   #8
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I would use a 3m rolock disk, or a "cookie" on an electric drill spinning fast or a die grinder if you have one. You don't need or want a grinder. Even a scotch brite pad by hand may take it off. I work with stainless. Fine sand paper is about the limit. 220 grit give or take.

If you have to go the grinder route, use a fine flap disk instead of a stone wheel. No steel wool or steel scrubbie. It will make the stainless rust.

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I leave the beer in the keg when cutting the top off with the plasma, it saves the problem you have.
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Old 08-04-2009, 10:45 PM   #9
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Everything might be killed in the boil but I wouldn't want to add my wort from the mash to a kettle with residue stuck in the slag. Besides it will be much easier to clean.
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Old 08-05-2009, 01:53 AM   #10
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I learned a neat little trick when I had my kegs plasma cut. Fill the bottom of the keg with a few inches of water and then cut away. The water cools any thing that falls to the bottom and prevents any pitting like you experienced. However, the sides can still be vulnerable as seen in one of my keggles.


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