I-Stereolithography (SLA) iwubuchwepheshe be-prototyping obusetshenziswa kakhulu kakhulu.Ingakhiqiza izingxenye ze-polymer ezinembe kakhulu futhi ezinemininingwane.Kwakuyinqubo yokuqala esheshayo yokwenza i-prototyping, eyethulwa ngo-1988 yi-3D Systems, Inc., ngokusekelwe emsebenzini womsunguli u-Charles Hull.Isebenzisa i-laser ye-UV enamandla aphansi, egxile kakhulu ukuze ilandelele izigaba ezilandelanayo zento enezinhlangothi ezintathu ku-vat ye-polymer ewuketshezi ye-photosensitive.Njengoba i-laser ilandelela ungqimba, i-polymer iyaqina futhi izindawo ezingaphezulu zishiywe njengoketshezi.Lapho ungqimba seluqediwe, i-level blade ihanjiswa endaweni ukuze ibushelelezi ngaphambi kokufaka isendlalelo esilandelayo.Ipulatifomu yehliswa ibanga elilingana nobukhulu bengqimba (ngokuvamile i-0.003-0.002 in), futhi ungqimba olulandelayo lwakhiwe phezu kwezingqimba eziqediwe ngaphambili.Le nqubo yokulandela nokushelela iphindaphindiwe kuze kube yilapho ukwakhiwa kuqedwa.Uma sekuqediwe, ingxenye iphakanyiswa ngaphezu kwe-vat futhi ikhishwe.I-polymer eyeqile iswayishwa noma ihlanjululwe kude nendawo.Ezimweni eziningi, ukwelashwa kokugcina kunikezwa ngokubeka ingxenye kuhhavini we-UV.Ngemuva kokwelashwa kokugcina, izisekelo ziyasikwa ingxenye futhi izindawo ezingaphezulu ziyapholishwa, zifakwe isihlabathi noma ziqedwe ngenye indlela.