- 1). Use sandcloth to polish the pipe you will be soldering, whether it looks dirty or not. Drape the sandcloth over the pipe and lightly squeeze with your fingers while rotating the pipe with your other hand.
- 2). Clean out the inside of the female fitting using the wire brush. Test fit the fitting and pipe.
- 3). Put on your latex gloves. Use the acid brush to put a healthy amount of flux around the outside of the pipe. Apply a smaller amount evenly inside the fitting all the way to the bottom.
- 4). Join the pipe and fitting together and use the brush to wipe off any excess flux at the edge of the fitting.
- 5). Unroll about 6 inches of solder and bend the last two inches to a 45- to 90-degree angle. Put on your safety glasses and switch your latex gloves for the leather ones.
- 6). Light the torch and put the tip of the flame on the fitting. Move it back and forth around the fitting for about 30 seconds until you see "sweat" on the pipe.
- 7). Remove the flame from the fitting and touch the solder to the joint. Move the solder around the edge of the fitting as it melts. The joint is full when a drop of solder drips from the bottom. Let cool.
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