Soldering temperature torch or a furnace to melt the filler metal. Different equipment is usually required since a soldering iron cannot achieve high enough temperatures for hard soldering or brazing. Brazing filler metal is stronger than silver solder, which is stronger than lead-based soft solder. Brazing solders are formulated primarily for strength, silver solder is used by jewelers to protect the precious metal and by machinists and refrigeration technicians for its tensile strength but lower melting temperature than brazing, and the primary benefit of soft solder is the low temperature used (to prevent heat damage to electronic components and insulation). Since
Things Ain't What They Used to Be Things Ain't What They Used to Be "Things Ain't What They Used to Be" is a 1942 jazz standard with music by Mercer Ellington and lyrics by Ted Persons. In 1941 there was a strike against the American Society of Composers, Authors and Publishers, of which Duke Ellington was a member. Because of the strike he could not air his songs on the radio. Instead, he used songs written by his son Mercer and pianist Billy Strayhorn. Strayhorn's compositions of this time include "Take the 'A' Train", "Chelsea Bridge" and "Day Dream". Mercer wrote "Things Ain't What They Used to