In　traditional　welding　processes,　the　electrode　is　the　cathode　and　the　workpiece　is　the　anode.　In　addition,　their　heat　and　mass　inputs　are　coupled　and　unable　to　be　freely　optimized　to　suit　the　needs　of　specific　applications.　A　modified　arc　welding　process　is　proposed　in　this　work　to　establish　a　cross-arc　process　where　two　wires　are　charged　by　a　second　power　supply　and　fed　into　a　traditional　gas　tungsten　arc　(GTA),　which　heats　the　workpiece.　It　is　theorized　an　inter-wire　arc　can　be　established　between　the　two　wires　to　directly　heat　both　wires,　by　which　the　heat　and　mass　inputs　are　decoupled.　Furthermore,　because　the　wire　is　melted　by　the　anode　and　cathode　of　the　inter-wire　arc,　the　wire　melting　efficiency　is　approximately　tripled.　To　verify　this　idea,　an　experimental　system　has　been　established　to　experimentally　demonstrate　the　feasibility　of　the　proposed　cross-arc　welding　process.　To　avoid　the　complexity　introduced　by　metal　transfer,　the　two　wires　are　replaced　by　two　carbon　electrodes　in　this　first　preliminary　study.　There　are　two　states　of　the　cross-arc　observed　from　experiments:　stable　and　double　arc.　Experimental　results　confirmed　that　the　stable　cross-arc　can　be　established　and　maintained.　Analysis　has　been　performed　to　discuss　how　the　parameters　affect　the　stability　of　the　cross　arc.