Lead-free solder alloys have been around for as long as people have done soldering, with sources dating back about 5,000 years. Most of these alloys were combinations like copper-silver or silver ...
Common fluxes include ammonium chloride, zinc chloride, rosin, and hydrochloric acid. A solder's melting point, toxicity, and uses are almost solely determined by its alloy metals. All solders ...
Granted, it's far from the cleanest repair you've ever seen, but it works. In the U.S., most solder is at least 35% lead, and some can be as much as 70% lead by mass. Therefore, anything that may ...