If you don't properly prepare the pipes for soldering you may end up with leaks. Then you will need to completely drain the water out of the pipes you are working on. It is impossible to solder pipes with water in them. Before you solder the pipes together, assemble all the pieces to make sure your have a proper fit and no unforeseen problems. Pipes cannot be soldered if water is in them.
Water prevents the pipes from reaching a hot enough temperature to melt solder.
The bread will dissolve when the water is turned back on. To view a multimedia demonstration of this tutorial, click here . The demonstration requires Macromedia Flash 4 player. If you don't already have it, click here to get it. Determine all the materials you will need to complete your plumbing project.