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Why you shouldn't mix Alu+Copper. Another Horror History.

post #1 of 51
Thread Starter 
Hi there,

Browsing through my pics, I found the old horror stories from the Zalman ZM-WB4 waterblock.

For those that don't know, it's a block made out of a copper base+anodized alu top.

There are lots of threads saying you shouldn't mix both, but I have yet to see an horror story like this one.


Pictures talk by themselves.








This is the top once cleaned of all the debris/salts/oxide/jizz:






Self-explanatory right?

Since I currently use that block on my GPU, I'm currently building an acrylic top. Well, I just need to stick the halves and test it out



So, one more time: Don't mix alu+copper in your loops fellas. Even less if you run tap water (I run distilled).



   
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post #2 of 51
didnt they know this when they made the block? How stupid....
post #3 of 51
Yikes. That looks like it also had an another issue though. Something rowing in there?
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post #4 of 51
i thought that was a weed grinder
post #5 of 51
Thread Starter 
Pure distilled water only.

Even more, the whole loop was cleaned up and new tubing was installed when I added that block.
   
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post #6 of 51
Quote:
Originally Posted by jach11 View Post
didnt they know this when they made the block? How stupid....
Genius idea they had.
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post #7 of 51
Quote:
Originally Posted by Cacophony View Post
i thought that was a weed grinder
Can understand why you would say so
post #8 of 51
that aint as bad as i've seen
also i think most of the jizz is organic stuff.. no silver? nuke?
    
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post #9 of 51
yeah try to add some silver into the loop, all my fittings are silver
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post #10 of 51
Thread Starter 
Quote:
Originally Posted by Skiivari View Post
that aint as bad as i've seen
also i think most of the jizz is organic stuff.. no silver? nuke?
You'd be surprised but it wasnt weed

All the stuff was salty. Not in the tasty sense, but it was hard and rough (alumina).

The green thing you see was actually only a thin layer covering some of the salt and they were leftovers from a car coolant I used long ago.

In a percentual expression, it was 95% alumina and 5% coolant leftovers.


I had to scratch the top pretty hardcore with a brass string brush in order to take all the stuff out. The block base was cleared with a kärcher at maximum pressure (50bar), then the oxide removed with chemicals and the brass fiber brush.



The acrylic top is on its way, I'll go grab the angled fittings tomorrow and mount the bish on the block.
   
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