Say you want to create a social network for soccer moms to chat and commune. Instead of building up the social site first and relying on the 8 soccer moms you know to get it going, it's better to create a blog with tips targeted toward soccer moms. Build it up with stories and useful tips other soccer moms need.
The main composition of a soldering iron is a metal tip, which is heated in an insulated handle by either gas combustion or electricity. Today, electronics soldering iron is widely used in repair jobs, installations, electronic assemblies and so on. It is also used for pyrography as well as plastic welding, although very rarely seen.
Trying to solder PE brass. I use flux (the paste type), a 40-watt soldering iron, and solder (not sure which type). I apply the flux, heat the part until the flux liquifies and sizzles and then apply the solder. The solder either doesn't melt or, if it does melt, it just forms tiny balls and doesn't flow into the joint.