Assertion: scarf joint | /r/ObjectUse | used in boat building
Facets:
value: commonly
type: TEMPORAL
Source sentences:
text: Scarf joints are commonly used in boat building but the slope of the joint is very acute (if I remember right the ratio is something like 1 in 12 or flatter) so there is more parallel grain to parallel grain glue surface but still doesn't equal the strength of clear solid wood..