If you don’t get anything else out of this – cleanliness is next to Godliness in soldering – everything here applies to plumbing joints as well . . .
What is really fun is a young FNG that has no clue about soldering and you draw the solder up into a pipe joint – their amazed just about every time – LOL!
Have Fun! – Run the Gun! – and remember – Fish Heads are Cheap!!