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Cleaning Nickel GPU Block: Koolance

post #1 of 17
Thread Starter 
So I found a good deal 2x gtx285's with Koolance blocks. I'm not super big on gaming and the 285's have always gotten the job done for what I do.

The downside is that they were used (obviously, they are quite old). I have one Koolance block in my possession and I decided to take it apart and clean it. I was too worried about what could be there.

I tried searching a bunch and didn't find much. I picked up some Brasso to at least polish/wipe away any gunk that was there. It worked good but I have a hard time getting into these little cracks/crevices (sorry for bad picture; not trying to show the state the block, but just the areas I want to clean)



So, is there a safe effective soaking method for cleaning nickel blocks, analogous to lemon juice for copper blocks? Or does anyone have suggestions for actually getting into these tight spots? A qtip is too big and either way, I can't really move it around much to actually clean anything. There really isn't any gunk there, but just for cosmetic reasons, I'd like it as clean as I can get (it will have a clear top on it)

Thanks for any suggestions. I also need to get a replacement o-ring. This one came out and it expanded too much to fit back in, regardless of what I tried haha
post #2 of 17
Try using the Brasso or another polish with a toothbrush over the hard to get areas.

I would not suggest soaking nickel blocks in any sort of acid.
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Big Lian Li
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post #3 of 17
Thread Starter 
Yeah, what I did managed to find suggest that the acid-soaking method was not recommended. I tried a bit with the toothbrush and Brasso. I might try it again a bit later. It just may be as clean as it can get. I'll give it one more clean whenever I'm ready to put it back together (when I get an o-ring).

Thanks!
post #4 of 17
Quote:
Originally Posted by Tomiger View Post

So I found a good deal 2x gtx285's with Koolance blocks. I'm not super big on gaming and the 285's have always gotten the job done for what I do.

The downside is that they were used (obviously, they are quite old). I have one Koolance block in my possession and I decided to take it apart and clean it. I was too worried about what could be there.

I tried searching a bunch and didn't find much. I picked up some Brasso to at least polish/wipe away any gunk that was there. It worked good but I have a hard time getting into these little cracks/crevices (sorry for bad picture; not trying to show the state the block, but just the areas I want to clean)



So, is there a safe effective soaking method for cleaning nickel blocks, analogous to lemon juice for copper blocks? Or does anyone have suggestions for actually getting into these tight spots? A qtip is too big and either way, I can't really move it around much to actually clean anything. There really isn't any gunk there, but just for cosmetic reasons, I'd like it as clean as I can get (it will have a clear top on it)

Thanks for any suggestions. I also need to get a replacement o-ring. This one came out and it expanded too much to fit back in, regardless of what I tried haha


Ummm, is it just me or does it look like the nickel has been completely corroded off? Maybe it's just the pics, but it seems like any nickel that was in there is long gone by now. Use the Brasso and a toothbrush, and after you get it as clean as possible throw up some pics.
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post #5 of 17
Thread Starter 
I think it's just the lighting. Let me find a better picture, it was under my oven light, which is quite warm (the light temperature, not the oven lol)
Edited by Tomiger - 7/7/13 at 9:04pm
post #6 of 17
Thread Starter 
Here. To be honest, this is the first nickel block I've owned, so you'd know better than me haha. Does it look bad?





Some areas are obviously very worn (near the ports) and weren't able to be "buffed" out during my first clean
post #7 of 17
Looks pretty clean for how old they are.

^^^
post #8 of 17
Quote:
Originally Posted by Tomiger View Post

I think it's just the lighting. Let me find a better picture, it was under my oven light, which is quite warm (the light temperature, not the oven lol)

If it's a nickel plated waterblock the inside should be something along the lines of this color wise (after it's clean)


The picture you linked kinda looks like tarnished copper.

Edit: This was posted prior to seeing the new pics. NVM, it's fine. First picture just had some wickedly messed up lighting I guess.
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post #9 of 17
Thread Starter 
haha yeah, it was an orange oven light. I didn't pay attention to how it made it look haha.

So should I continue with the procedure to clean it with Brasso and a tooth brush? I wish I had some way to spray it clean after using Brasso. All I have is a sink faucet without hose/spray so I can't get much pressure into haha, take forever. I just wanna get it as clean as can be, rinse with distilled and seal it up
post #10 of 17
Quote:
Originally Posted by Tomiger View Post

haha yeah, it was an orange oven light. I didn't pay attention to how it made it look haha.

So should I continue with the procedure to clean it with Brasso and a tooth brush? I wish I had some way to spray it clean after using Brasso. All I have is a sink faucet without hose/spray so I can't get much pressure into haha, take forever. I just wanna get it as clean as can be, rinse with distilled and seal it up

Go down to the drugstore and pickup a toothbrush with hard bristles. Nickel is a hard enough metal not to get scratched by hard bristle toothbrushes, I would imagine. Stick to cleaners that are safe though. If you need a different solution head down to the drug store and pick up some concentrated citric acid. Then run some hot water from your facet into a jug, about 1 liter. Mix in one tablespoon of citric acid, and stir. Do not soak it in that, use it to scrub with the toothbrush. What I just described is how they clean industrial coffee machines, and the such. (Mind you they just run it through like they would coffee/espresso/etc, they don't scrub. Do not soak though)
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