Assertion: solder's flux | /r/HasProperty | oxygen-reducing compound
Facets:
Source sentences:
text: There are five basic areas that make up the soldering process: solder, flux (an oxygen-reducing compound that coats and protects the piece during the soldering process to help prevent oxidation), heat (jewelry-making or hand torch), fit (the edges being joined should fit tightly) and cleanliness (make sure your hands, metals and tools are clean of dirt and oils, as pieces won’t join together if any component is dirty).