:.K HEADS … sulphite, 15 per cent lithium chloride, 45 per cent po-tassium chloride and 7 per cent potassium fluoride isthen applied with a brush or swab. The edges are thenbrought together and tacked about every 2 in. with theoxy-acetylene torch. The edges are held with pliers or aclamp while the spots are…
Automobiles · Aeronautics
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