Have any of you welded copper for connections, I'm not talking about exothermic welding(cadwelding), I'm asking about what i assume would be using an oxy acetylene torch. or have any of you came across old welded connections? Does it seam to be as bullet proof a connection as they get? If you have experienced this could you give me your thoughts and any information you think may be pertinent on it. If not, have any of you used cadweld(exothermic) for power connections? Or happened across any?

Thank you