I need to talk about it in my physics class
Are you familiar with any type of soldering? There is low temp, and high temp, depending on the application, and the type of solder that you use. The most important thing to remember, is to thoroughly clean the inside of the fittings, and the end of the pipe. If you cut a pipe, make sure that you ream the inside, to restore the inner diameter of the pipe to its full bore dimension, otherwise, water will eat the pipes, from the inside, and you will have a premature breakdown in your piping system. A non acid, water soluble flux is required, again, so your pipes won't deteriorate from the inside. Low temp soldering can use a propane torch, but high temp, requires a hotter flame, to melt the solder. Practice on some pipes, before soldering for real. Never leave your flame in one spot too long. Doing so will cause the flux to be burned at that spot, and no solder will take at that spot, thus, ensuring a leak. Move your flame around the whole joint, heating it up uniformly, and concentrate your flame towards the center of the fitting, as solder will travel towards the heat. Good luck!
