Assertion: resin | /r/ObjectUse | used as internal reinforcement
Facets:
value: for very thin skinned metal objects
type: PURPOSE
value: sometimes
type: TEMPORAL
Source sentences:
text: Rosin is also sometimes used as internal reinforcement for very thin skinned metal objects - things like silver, copper or tin plate candlesticks, or sculptures, where it is simply melted, poured into a hollow thin-skinned object, and left to harden.