About: http://webisa.webdatacommons.org/315987848

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Electroforming is a very slow process, as it takes up to two weeks to produce a shell 0.25 inches thick in a material such as nickel, which has sufficient strength and wear resistance to be used in permanent tooling.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com