I-Stereolithography (SLA) yeyona nto isetyenziswa kakhulu kwitekhnoloji yeprototyping ekhawulezayo.Inokuvelisa iindawo zepolymer ezichaneke kakhulu nezineenkcukacha.Yayiyinkqubo yokuqala ekhawulezayo yokuchwetheza, eyaziswa ngo-1988 yi-3D Systems, Inc., esekwe kumsebenzi womqambi uCharles Hull.Isebenzisa amandla aphantsi, i-laser ye-UV egxile kakhulu ukukhangela amacandelo alandelelanayo ento enomacala amathathu kwivathi yolwelo yepolymer ebonayo.Njengoko i-laser ilandelela umaleko, i-polymer iyaqina kwaye iindawo ezingaphezulu zishiywe njengolwelo.Xa umaleko ugqityiwe, iblade yokulinganisa ihanjiswa kuwo wonke umphezulu ukuze igudiswe ngaphambi kokubeka umaleko olandelayo.Iqonga lihlanjululwa ngumgama olingana nobukhulu bengqimba (ngokuqhelekileyo i-0.003-0.002 ngaphakathi), kwaye uluhlu olulandelayo lwenziwe phezu kweengqimba ezigqityiweyo ngaphambili.Le nkqubo yokulandelela kunye ne-smooling iphinda iphindwe kuze kube yilapho ukwakhiwa kugqityiwe.Nje ukuba igqityiwe, inxalenye inyuswa ngaphezu kwevat kwaye ikhutshwe.Iipolymer ezigqithileyo ziswabhuka okanye zihlanjululwe kude nomphezulu.Kwiimeko ezininzi, unyango lokugqibela lunikezelwa ngokubeka inxalenye kwi-oven ye-UV.Emva kokunyanga kokugqibela, izixhaso ziyasikwa inxalenye kwaye umphezulu upholiswe, ufakwe isanti okanye ugqitywe ngenye indlela.