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Originally Posted by Kobuchi
That corrosion in the cap is a good thing. It's sacrificial - so the copper/brass corrodes less (e.g. stays shinier) than without the aluminum anode. This is a selling point. We do the same for vehicles and steel structures, why not waterblocks. Give it a copper wire tail to hang in the coolant.
Aluminum does pit when it corrodes. So chunks can fall off.
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all fine and good until said chunks clog your loop
not just water evaporates, guys....think puddle of gasoline/mineral spirits/acetone/alcohol.
cathar said nickel plating is possible for 25 cents each....and is there a problem with machining out of brass?