How do I get an itty bitty laboratory grade freezer? Can I build one? Answered
It would be awesome if it could fit on my shelf and freeze up to -50Â°C (-58Â°F) maybe even lower, if possible. I want do deepfreeze some vacuum packed spices. I know it's overkill and I do not really care. (Oh actually, I do...) Would some big Peltier Elements suffice? I guess they would not be very efficient, and this would be a definite plus? Maybe if heat is transported away from the element with a standard CPU water cooling system? I'm afraigt they're not up to the task. Even getting a portable fridge cool takes ages... What about modifying a 'normal' small freezer? One could maybe just control the pump with another kind of controller, ie an arduino with a PT1000 and a relais... I read though that one might need another cooling agent capable of even lower temperatures then those used in commercial grade freezers? Any links to tutorials, builds or products would be deeply appreciated.