Also known as: hd.
HD has various meanings in the Porn category. Discover the full forms, definitions, and usage contexts of HD in Porn.
A method of fastening sheet copper that involves the use of a brass screw with a large copper or brass washer. The screw is tightened sufficiently to keep the metal flat, but not restrict its lateral movement. The entire assembly is usually covered with a copper cap, fully soldered to provide watertightness.
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