Solar Collector Fins: Mother's Amazing Fin Press

Follow this plan to make inexpensive heat-grabbing solar collector fins for your solar collector.

061 solar collector fins - steps
PHOTO 1: Remove the ends and slice open a tin cylinder and trim the metal to size. PHOTO 2: Place the sheet between your fin shaper's cap and base and press. PHOTO 3: Pull out the grooved metal. PHOTO 4: Solder the finished fin to your copper collector pipe.
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