A journal of additive manufacturing and the long life of machines: rail, ships, plant and the parts nobody makes any more.https://printedspareparts.comen-gbhttps://printedspareparts.com/notes/naval-bronze-impellerhttps://printedspareparts.com/notes/naval-bronze-impellerSample. Not a report of a real event. A naval repair yard has qualified a printed bronze pump impeller, replacing a casting with a forty-week lead time.Tue, 27 Oct 2026 00:00:00 GMTnotedefencedefencequalificationpumpshttps://printedspareparts.com/reviews/qualification-2026https://printedspareparts.com/reviews/qualification-2026Sample. Not a report of a real event. Forty-one papers read and compared: what is settled, what is argued about, and what nobody has yet measured.Tue, 27 Oct 2026 00:00:00 GMTreviewstandardsqualificationliteraturestandardshttps://printedspareparts.com/notes/class-valve-housinghttps://printedspareparts.com/notes/class-valve-housingSample. Not a report of a real event. A classification society approved a printed valve housing for engine-room service, its first for a pressure part.Mon, 26 Oct 2026 00:00:00 GMTnotemaritimemaritimeclassificationpressure-partshttps://printedspareparts.com/notes/offshore-valve-libraryhttps://printedspareparts.com/notes/offshore-valve-librarySample. Not a report of a real event. An offshore operator has digitised six hundred valve parts into a print-on-demand library.Sun, 25 Oct 2026 00:00:00 GMTnoteoil-and-gasoil-and-gasdigital-inventoryvalveshttps://printedspareparts.com/notes/printed-window-crankshttps://printedspareparts.com/notes/printed-window-cranksSample. Not a report of a real event. A classic-car club now orders printed window cranks drawn from a factory archive.Sat, 24 Oct 2026 00:00:00 GMTnoteautomotiveautomotiveaftermarketobsolescencehttps://printedspareparts.com/notes/qualification-guidance-drafthttps://printedspareparts.com/notes/qualification-guidance-draftSample. Not a report of a real event. Draft guidance on qualifying replacement parts opens for comment until January.Fri, 23 Oct 2026 00:00:00 GMTnotestandardsstandardsqualificationhttps://printedspareparts.com/notes/remote-spares-cost-modelhttps://printedspareparts.com/notes/remote-spares-cost-modelSample. Not a report of a real event. A preprint proposes a cost model for on-demand spares in remote maintenance bases.Thu, 22 Oct 2026 00:00:00 GMTnotepaperspapersdigital-inventorycosthttps://printedspareparts.com/essays/depot-door-handleshttps://printedspareparts.com/essays/depot-door-handlesSample. Not a report of a real event. On obsolescence, fire rules and the slow arithmetic of a warehouse that prints instead of stores.Wed, 21 Oct 2026 00:00:00 GMTessayrailobsolescencedigital-inventoryrailhttps://printedspareparts.com/essays/what-a-powder-remembershttps://printedspareparts.com/essays/what-a-powder-remembersSample. Not a report of a real event. Why the quality of metal powder, not the printer, decides whether a printed pump part lasts as long as a cast one.Mon, 19 Oct 2026 00:00:00 GMTessaystandardspowderqualificationmaterialshttps://printedspareparts.com/essays/engine-room-workshophttps://printedspareparts.com/essays/engine-room-workshopSample. Not a report of a real event. Shipboard printers have been trialled for a decade. A sober account of what crews actually make at sea.Sat, 17 Oct 2026 00:00:00 GMTessaymaritimemaritimeclassificationshipboard