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With this in mind [Advanced Engineering Solutions] created a metal 3D printed heat exchanger that is half the size and four times the efficiency of the one it was designed to replace. Video after ...
Open Source Low Tech on MSN4d
$30 3D printed window heat exchanger DIY- Heat and dehumidify for cents per dayA DIY 3D printed window heat exchanger that costs just $30 to build. It efficiently heats and dehumidifies your home for a ...
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