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