The wire compression roller 32 is positioned so that it lies on the side of the welding wire 1 opposite {TAIL ~ the wire driving roller} 30 and so that the exterior radial surface of {HEAD ~ the wire compression roller} 32 is in contact with the welding wire 1 
The wire compression roller 32 is positioned so that it lies on the side of the welding wire 1 opposite { TAIL ~ the wire driving roller } 30 and so that the exterior radial surface of { HEAD ~ the wire compression roller } 32 is in contact with the welding wire 1
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