Assertion: lathe's screw | /r/MadeOf | metal
Facets:
value: for use in wood
type: PURPOSE
Source sentences:
text: Early machine screws of metal, and early wood screws [screws made of metal for use in wood], were made by hand, with files used to cut the threads.
text: However, it was not until 1760–1800 that these various elements were brought together successfully to create (in contemporaneous parallel) two new types of machine tool: the screw-cutting lathe (for low-volume, toolroom-style production of machine screws, with easy selection of various pitches) and the first high-volume-production, specialized, single-purpose machine tools for the production of screws, which were created to produce wood screws [meaning screws made of metal for use in wood] at high volume and low unit price.