How to produce liquid nitrogen at home for $1.29 per liter using salvaged AC parts [TechSpot]

YouTuber Hyperspace Pirate has demonstrated how to produce real liquid nitrogen at home. He built his own cryocooler entirely from salvaged parts, including components from old window air conditioning units and a few electronic parts for motorized valves. No fancy, off-the-shelf cryocoolers were involved in this process.Read Entire Article