Comments by "kleetus92" (@kleetus92) on "Making a Huge Waterblock from Scrap Copper -Trash to Treasure" video.

@WarpedYT That was a nice tip, flooding the crucible with flux and hiding the copper under it. Simple solution, but knowing when to use it is the key!
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@WarpedYT If you want to squeak a little more performance out of your cooling loop, either add a little bit of isopropyl alcohol to it with a maybe a single drop of soap, or get a bottle of water wetter... It will help with the boundary layer flow by acting as wetting agent to allow even greater heat transfer. It doesn't take long for it to work either, put it in, and maybe 2-3 minutes depending on your flow rate to get everything distributed, you should be able to see it change. Might be an idea for a video if you can add it to a stable system while the pump is running, like add it to the reservoir once you hit your steady state 122F... see how much it changes.
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@TurkeyOW I am. It will work in any water based heat transfer system. My first time seeing it was in high performance car applications where the cooling system was being pushed to the limit, even with a bigger radiator. It may not solve all your problems, but it will give a few extra percent of heat transfer. You can buy a product literally called 'water wetter' in car parts stores... it's a clear redish pink liquid, apply per instructions.
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