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Old 02-16-2011, 10:55 PM   #1
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Default Grinding keggle to remove rust?

So I got my 1/4 barrel sankey cut the other day by a welding shop. I got it home, cleaned it and noticed that the inside was covered in rust. I got on here, of course, and found out that I should clean it with CLR. I did this twice and I'm still looking at a good bit of rust. Some of the rust did come off, but it keeps showing up on the rough parts of the inside.

I'm wondering if there is a way that I can grind down the spots that have the rust on them down to the SS with some kind of grinding pad. Is there some kind of pad attachment that I can get for a grinder (or some other tool) that will do that? There's got to be a way!!!

Thanks for any info you can give.

I'm supposed to brew my first all-grain batch on Sunday so I'm getting desperate.

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Old 02-16-2011, 11:14 PM   #2
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get a flap disc for your grinder and go at it. Just clean it real well after and consider re-passivating it afterwards. I didn't re-passivate and mine is fine though.

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Old 02-16-2011, 11:16 PM   #3
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Elbow grease and sandpaper works wonders.

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Old 02-16-2011, 11:32 PM   #4
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flap disk and grinder is a good call. Barkeepers Friend (BKF) will re-passivate the stainless, so you should make a good paste and put a coating on there and let is sit for a while.

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Old 02-16-2011, 11:50 PM   #5
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You can get the flap disks at Home Depot or Lowes.
Get the 4 1/2" that go on a grinder.

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Originally Posted by drumming102 View Post
get a flap disc for your grinder and go at it. Just clean it real well after and consider re-passivating it afterwards. I didn't re-passivate and mine is fine though.
I've been trying to tell people this same thing, but some just don't want believe it.
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Old 02-17-2011, 12:26 AM   #6
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flap disk and grinder is a good call. Barkeepers Friend (BKF) will re-passivate the stainless, so you should make a good paste and put a coating on there and let is sit for a while.
On all of the SS or just the spots that I'm cleaning?

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You can get the flap disks at Home Depot or Lowes.
Get the 4 1/2" that go on a grinder.
Is there a certain kind that I need? Like a certain grain or anything?
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Old 02-17-2011, 12:30 AM   #7
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Only comes in 1 grit really. And no need to hit it all just smooth down the slag spots till they are even with everything and then just lightly hit the rust. It will come right off no problem.

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Old 02-17-2011, 12:41 AM   #8
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If it were my kettle, I'd skip the flap disk (although I have one) and just paste the sh1t out of it with BKF). You're pickling metal.

I don't really know what I'm talking about. I hope someone with some knowledge steps up here. Monti?

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Old 02-17-2011, 12:44 AM   #9
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Quote:
Originally Posted by uncleben113 View Post
So I got my 1/4 barrel sankey cut the other day by a welding shop. I got it home, cleaned it and noticed that the inside was covered in rust.
What your seeing is probably the slag and smoke from the cut of the plasma torch.
They should have filled the keg with water within a couple of inches from being full.
The water catches all the slag, and when emptied your keg should look as new as the day it was manufactured.
A welding shop would not have used a grinder,(unless their idiots) You can't cut stainless with Oxy-Acetylene, and every welding shop has a plasma torch, so that sounds like the most likely cause.
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Old 02-17-2011, 12:54 AM   #10
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Quote:
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Only comes in 1 grit really.
I noticed Home Depot has a 40, 60, and 80 grit for the flap discs. I'm going with the 80. That'll work right?
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