Sweating copper pipes is not difficult. There are how-to directions available where you would purchase the torch, solder, flux, gas, and pipe cleaning supplies. The main points to remember are that you first cut the pipe square. Using a tubing cutter for this is best. Now clean the pipe end and inside of the fitting with a wire brush or emery cloth. Before assembling the joint, apply a coating of flux with a small brush. With the pipe and joint assembled and in the proper position, heat the fitting, not the pipe. Solder is melted by the hot joint, not by the torch flame itself. When the joint is hot enough to melt the solder, withdraw the flame. The molten solder will be drawn into the joint. When you see a silver ring around the joint, you're done. Do not move the joint until the solder has had time to cool some. It doesn't have to be stone cold, just give it a couple of minutes or so. Remember the joint will be HOT for several minutes. After it has cooled to the point of being warm, wipe it with a damp rag to clean off the flux residue. Don't force cool with water. The only joint I have ever had leak were two that I got careless and forgot to flux. Flux is the magic elexicor.
