{HEAD ~ The wire driving roller} 30 and the wire compression roller 32 being positioned on {TAIL ~ either side} of the welding wire 1 and each being in contact with the welding wire 1 impose a laterally opposed compressive force upon the welding wire 1, increasing the friction between the welding wire 1 and the wire driving channel 35 
positioned on
{ HEAD ~ The wire driving roller } 30 and the wire compression roller 32 being positioned on { TAIL ~ either side } of the welding wire 1 and each being in contact with the welding wire 1 impose a laterally opposed compressive force upon the welding wire 1 , increasing the friction between the welding wire 1 and the wire driving channel 35
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH