what is vapor phase soldering?
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Replying to @alt_kia
using phase transition of a fluoropolymer liquid (Fluorinert) as a sort of thermostat. instead of an IR oven with a PID controller you rely on the fact that latent heat of condensation >> heat transferred by convection and radiation, and...
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Replying to @whitequark
ahh nice. what kind of machine do you use for that?
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Replying to @alt_kia
I cobbled together a machine from the cheapest electric pot I found in a store in HK, a PID controller I had lying around, some metal junk as a base, and a solid state relay. search my earlier tweets it has photos
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Replying to @whitequark
and i saw the website for the fluid you said you used, nice, you can get them in various boiling points
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Replying to @alt_kia
yep yep. can also use them to cool PCBs by submerging in the liquid, it's absurdly efficient AND it's an incredibly good dielectric. people cool CO2 lasers with it too
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Replying to @whitequark @alt_kia
it's also nearly harmless (so long as you don't overheat it). they can carry a lot of dissolved oxygen and there's a picture from an old paper where a mouse is breathing oxygenated fluorinert in a beaker.
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Replying to @whitequark @alt_kia
I went thru a phase (ha!) where my friends and I were fascinated by liquid cooling off computers, more specifically the use of Fluorinert for straight up "open tank insert computer" cooling. Naturally none of us tried so much as a water block or mineral oil, but...
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