Patent ID: 8748772

Claim:
A welding shoe comprising, in combination: a) at least one copper buss bar having a forward face and a backward face, wherein the forward face comprises a rigid serrated surface adjacent to a weld cavity; b) at least one first dual flow water channel within each copper buss bar, each first dual flow water channel having an upper section and a lower section; c) at least one second dual flow water channel within each copper buss bar, each second dual flow water channel having an upper section and a lower section; d) at least one water flow manifold communicating with the first and second dual water flow channel lower sections; e) at least one water flow manifold communicating with the first and second dual water flow channel upper sections; f) a first copper shoe plug capping each first dual flow water channel upper section; g) a second copper shoe plug capping each second dual flow water channel upper section; and h) at least one controller module for regulating a countercurrent flow of water through the water flow manifolds and water flow channels of each welding shoe.