▁header ▁bar , ▁edge ▁stri pping ▁and ▁the ▁stri pping ▁machine ▁technology . ▁ ▁In ▁contrast ▁to ▁the ▁st ain less ▁steel ▁header ▁bar ▁then ▁used ▁in ▁the ▁Isa ▁Process ▁c ath ode , ▁the ▁K idd ▁Process ▁c ath ode ▁used ▁a ▁solid ▁co pper ▁header ▁bar , ▁which ▁was ▁w eld ed ▁onto ▁the ▁st ain less ▁steel ▁sheet . ▁This ▁gave ▁a ▁lower ▁voltage ▁drop ▁( by ▁ 8 – 1 0 ▁mill iv ol ts ) ▁than ▁the ▁Isa ▁Process ▁c ath ode . ▁ ▁The ▁Isa ▁Process ▁technology ▁used ▁the ▁w ax ed ▁edge ▁at ▁the ▁bottom ▁of ▁the ▁c ath ode ▁plate ▁to ▁stop ▁the ▁co pper ▁depos iting ▁around ▁the ▁plate ’ s ▁bottom ▁to ▁form ▁a ▁single ▁mass ▁of ▁co pper ▁running ▁from ▁the ▁top ▁of ▁one ▁side ▁of ▁the ▁c ath ode ▁plate ▁around ▁the ▁bottom ▁to ▁the ▁top ▁of ▁the ▁other ▁side . ▁The ▁co pper ▁was ▁stri pped ▁from ▁the ▁c ath ode ▁pl ates ▁as ▁two ▁separate ▁sheets . ▁The ▁K idd ▁Process ▁technology ▁did ▁not ▁use ▁w ax , ▁as ▁it ▁was ▁thought ▁that ▁it ▁could ▁ex ac erb ate ▁the ▁imp urity ▁problems ▁with ▁which ▁the ▁plant ▁had ▁been ▁struggling . ▁At ▁K idd , ▁the ▁stri pping ▁approach ▁was ▁to ▁remove ▁the ▁co pper ▁from ▁the ▁c ath ode ▁plate ▁as ▁a ▁single ▁“ V ” - sh aped ▁c ath ode ▁product , ▁a kin ▁to ▁a ▁t aco ▁shell . ▁ ▁The ▁K idd ▁Process ▁initially