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Shout out to Immich memories for reminding me of my surprisingly successful attempt at Homelab full mineral oil submergence coolant on 5-2-19, in this case, using 2 Raspberry Pi 3 B+s, a ton of velcro, a suspicious doordash oil of solely mineral oil and a wall flower half sphere vase from Amazon.

I still use those Pis today (in normal atmosphere of course), but yet despite several alcohol baths and scrubbings, are still sticky to this day with oil traces.