Assertion: solder's flux | /r/HasProperty | required
Facets:
Source sentences:
text: flux is required
text: Flux is required when joining brass to copper using 15%, just make sure not to use too much flux, a thin layer on the male side of the tubing
text: Unless a very specific flux is required that is not available as a wire solder core, flux core wire solder is generally recommended.
text: To overcome this a flux is required.