How To Solder Copper Pipes Like A Pro - Plumb University
Therefore, you can solder copper pipes that run in any direction, whether it’s horizontally or vertically. Keep filling the joint until the solder starts to drip out. Rule of thumb is a 1/2″ pipe will require 1/2″ of solder wire to fill the joint, a 3/4″ pipe will require 3/4″ of solder wire, and so on. Once you have solder dripping out of the fitting socket, you know it’s full.