Hi, With a bag of end-feed elbows, a propane blowtorch, Bernzomatic water soluble flux and lead-free solder I set out to learn how to solder. It sort of works, but one thing is not clear. Once the solder cools, it forms fine crystals. I was expecting it to be smother. Is this normal? Was the pipe not hot enough and it cooled down too quickly (I did not touch it with a wet cloth until it cooled down on its own). Overheating the pipe burns my flux and turns the whole thing into a blackened mess. The solder is Bernzomatic silver bearing solid wire solder. I cut one of the joints with a hacksaw along the pipe, and the coverage of flux is good. But I am able to pull the 2 layers of copper appart with a pair of pliers. I think I am close to being reasonably good at this task, but any advice would be very welcome.