I contemplated making a TEC chiller similar to the MCWCHILL-452 but using xjinn's "many parallel channels drilled through copper" design as the cold side block and then traditional wbs on the hot sides. Seems like a reasonable way to make use of the heat capacity of the copper provided you can do lots of small diameter holes. Maybe silver plus EDM would be better than copper and drilling? Something big enough to fit 4-8 TECS onto would be good because you could run them at low voltage for improved efficiency...
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