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 yokulandelela 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.