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.
There is not enough to leave to large rosin deposits on the PCB, making the clean up after the re-work much more manageable. The type solder used is often referred to as Eutectic. Eutectic solder is made up of 63 % tin and 37% lead and has lower melting temperature (183 degrees Celsius). Figure 10: 63/37 Eutectic No Clean Solder 2d-Alcohol and Cotton Swabs Isopropyl alcohol is used to clean the rosin and dirt off of PCBs.