{HEAD ~ A cathodic arc cathode} is provided with {TAIL ~ an insulating ring} in close proximity to the underside of the cantilevered edge of the target, and with no other conducting surface exposed in the coating system 
is provided with
{ HEAD ~ A cathodic arc cathode } is provided with { TAIL ~ an insulating ring } in close proximity to the underside of the cantilevered edge of the target , and with no other conducting surface exposed in the coating system
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH