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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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What is it? Set 496
2887 -- Van Dorn spike key -- the only one's that I've seen are for jail locks.
2889 -- mercury arc rectifiers/mercury arc valves: see http://en.wikipedia.org/wiki/Mercury-arc_valve Northe |