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
Hard and soft C or an alveolo-palatal , and occurs before not only , and , but also , , and . Another similar system with hard and soft is found in Faroese with the hard being and the soft being , and Turkish where the soft is . The Vietnamese alphabet does not have a hard or a soft per se. However, since it was inherited from European languages, the letter never occurs in "soft positions", i.e. before , and where is used instead, while never occurs elsewhere except in the digraph and a few loanwords. Hồ Chí Minh had proposed a simplified