Assertion: solder's flux | /r/MadeOf | rosin
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: The electrical soldering flux is usually made of rosin hence termed as rosin soldering flux.
text: Electronic solder usually has a flux made of rosin.
text: Rosin core solder is also fabricated with a hollow core inside the solder wire, but the flux used is a milder variety made of rosin, which is a solid form of resin derived from conifers such as pine.