{TAIL ~ The apparatus} and method of the invention employ a gas torch which has {HEAD ~ the feature} of selective addition of metal powder to the gas flow, in a cyclical pattern of metal spraying and non spraying utilization of the same torch 
{ TAIL ~ The apparatus } and method of the invention employ a gas torch which has { HEAD ~ the feature } of selective addition of metal powder to the gas flow , in a cyclical pattern of metal spraying and non spraying utilization of the same torch
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