Printingtechnologyhascome a longwaysinceGutenberg's time, buteventoday's mostadvancedlaserprintershaveonlyprintedflat, two-dimensionalobjects... untilnow.
Theselargeandcomplex 3D printersworkin a completelydifferentway.
これらの大型で複雑な3Dプリンターは、全く異なる方法で動作します。
Unlike a sculptorwhochipsawayat a blockofstonetoreveal a shapeunderneath, 3D printersworkintheoppositeway, buildingupphysicalobjectsbyaddingmateriallayeronlayer.
Theyrealisedthat 3D printershadmanyuses - forexample, theydiscoveredthat 3D printersweregreatatmakingprototypes – modelsof a productthatcanbetested, improvedandusedtodevelopbetterproducts.
Oneareawhich 3D printingdramaticallyimprovedwasmedicalprosthetics - artificialbodypartsmadespeciallyforsomeonewhohaslostanarm, a legor a foot, forexample.