Here's something I'd like to see: CPUs are usually pressed onto their heat sinks with thermal paste, but wouldn't soldering them on be even better? Of course, that's not practical, because heat sinks drain heat away too fast and CPUs get damaged by the heat. But here's something entirely new: https://buy.solder.com/NanoFoil-Activation-Kit/P1051_1019/
The kit is 158 USD, and comes with several bits of reactive "NanoFoil", including some that is tin coated. The foil is placed between two things to solder. Pressure is applied and the foil is activated by, say, a 9V battery. The foil instantly heats up to 700-1500 degrees C, melting the solder with a pulse of heat that is locally intense but dissipates quickly. Here's a video. The foil becomes an aluminum-nickel alloy and the two items are tin soldered to the foil .
I'm dying to know if this could permanently attach a heat sink or if it would fry the CPU. Surely there is an old system around you could try it on?
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