Konke okudingeka ukwazi ngesikhathi esidlule, samanje kanye nekusasa le-sterolithography

I-Vat photopolymerization, ikakhulukazi i-laser stereolithography noma i-SL/SLA, kwakuwubuchwepheshe bokuqala bokuphrinta be-3D emakethe. UChuck Hull wayisungula ngo-1984, wayinika ilungelo lobunikazi ngo-1986, futhi wasungula i-3D Systems. Le nqubo isebenzisa umqadi we-laser ukuze i-polymerize into ye-monomer e-photoactive ku-vat. Izendlalelo ze-photopolymerized (ezilungisiwe) zinamathela epuletini lokwakha elihamba phezulu noma phansi kuye ngehadiwe, okuvumela ukuthi kwakheke izendlalelo ezilandelanayo. Izinhlelo ze-SLA zingakhiqiza nezingxenye ezincane kakhulu nezinembile zisebenzisa ububanzi obuncane bomqadi we-laser, enqubweni eyaziwa ngokuthi i-micro SLA noma i-µSLA. Zingakhiqiza nezingxenye ezinkulu kakhulu zisebenzisa ububanzi obukhulu bomqadi kanye nezikhathi zokukhiqiza ezinde, ngaphakathi komthamo wokwakha olinganisa ngaphezu kwamamitha amabili e-cubic.

Iphrinta ye-SLA-1 Stereolithography (SLA), iphrinta yokuqala ye-3D yezentengiselwano, yethulwa yi-3D Systems ngo-1987.

Kunezinhlobo eziningana zobuchwepheshe be-vat photopolymerization ezitholakalayo namuhla. Obokuqala ukuvela ngemuva kwe-SLA kwakuyi-DLP (Digital Light Processing), eyasungulwa yi-Texas Instruments futhi yalethwa emakethe ngo-1987. Esikhundleni sokusebenzisa umsebe we-laser we-photopolymerization, ubuchwepheshe be-DLP busebenzisa iphrojektha yokukhanya kwedijithali (efana nephrojektha ye-TV ejwayelekile). Lokhu kuyenza isheshe kune-SLA, njengoba ingenza i-photopolymer ibe ungqimba lonke lwento ngesikhathi esisodwa (okubizwa ngokuthi inqubo "ehleliwe"). Kodwa-ke, ikhwalithi yezingxenye incike ekuxazululweni kwephrojektha futhi iyancipha njengoba usayizi ukhuphuka.

Njengokukhishwa kwezinto ezibonakalayo, i-sterolithography yatholakala kalula ngokutholakala kwezinhlelo ezishibhile. Izinhlelo zokuqala ezishibhile zazisekelwe ezinqubweni zokuqala ze-SLA ne-DLP. Kodwa-ke, eminyakeni yamuva nje, kuvele isizukulwane esisha sezinhlelo ezishibhile kakhulu, eziqinile ezisekelwe emithonjeni yokukhanya ye-LED/LCD. Ukuvela okulandelayo kwe-photopolymerization ye-vat kwaziwa ngokuthi i-photopolymerization "eqhubekayo" noma "engenazingqimba", okuvame ukusekelwe kusakhiwo se-DLP. Lezi zinqubo zisebenzisa i-membrane, ngokuvamile i-oxygen, ukuze kuvunyelwe amazinga okukhiqiza asheshayo naqhubekayo. Ilungelo lobunikazi lalolu hlobo lwe-sterolithography labhaliswa okokuqala ngo-2006 yi-EnvisionTEC, inkampani ye-DLP eye yaqanjwa kabusha ngokuthi i-ETEC, ngemuva kokuthengwa kwayo yi-Desktop Metal. Kodwa-ke, i-Carbon, inkampani ese-Silicon Valley, yaba ngeyokuqala ukumaketha lobu buchwepheshe ngo-2016 futhi kusukela lapho isizimise njengomholi emakethe. Ubuchwepheshe be-Carbon, obaziwa ngokuthi i-DLS (Digital Light Synthesis), bunikeza amazinga okukhiqiza aphezulu kakhulu kanye nekhono lokukhiqiza izingxenye ngezinto ezihlanganisiwe eziqinile, ezihlanganisa ama-thermosets nama-photopolymers. Ezinye izinkampani, njenge-3D Systems (Isithombe 4), i-Origin (manje eyingxenye ye-Stratasys), i-LuxCreo, i-Carima, nezinye, nazo zethule ubuchwepheshe obufanayo emakethe.