Zonse zomwe muyenera kudziwa zokhudza zakale, zamakono komanso zamtsogolo za stereolithography

Kupopera kwa Vat, makamaka laser stereolithography kapena SL/SLA, kunali ukadaulo woyamba wosindikiza wa 3D pamsika. Chuck Hull adapanga izi mu 1984, adazipatsa patent mu 1986, ndipo adayambitsa 3D Systems. Njirayi imagwiritsa ntchito kuwala kwa laser kuti ipange polymer ya monomer yogwira ntchito mu vat. Zigawo zopopera (zokonzedwa) zimamatira ku build plate yomwe imapita mmwamba kapena pansi kutengera hardware, zomwe zimapangitsa kuti zigawo zotsatizana zipangidwe. Machitidwe a SLA amathanso kupanga zigawo zazing'ono kwambiri komanso zolondola pogwiritsa ntchito kuwala kwa laser, munjira yotchedwa micro SLA kapena µSLA. Amathanso kupanga zigawo zazikulu kwambiri pogwiritsa ntchito kuwala kwa kuwala kwakukulu komanso nthawi yayitali yopangira, mkati mwa kuchuluka kwa zomanga zopitilira mamita awiri.

Chosindikizira cha SLA-1 Stereolithography (SLA), chosindikizira choyamba cha 3D chamalonda, chinayambitsidwa ndi 3D Systems mu 1987.

Pali mitundu ingapo ya ukadaulo wa photopolymerization wa vat womwe ulipo masiku ano. Woyamba kuonekera pambuyo pa SLA unali DLP (Digital Light Processing), yomwe idapangidwa ndi Texas Instruments ndipo idagulitsidwa mu 1987. M'malo mogwiritsa ntchito kuwala kwa laser pa photopolymerization, ukadaulo wa DLP umagwiritsa ntchito pulojekitala ya kuwala kwa digito (yofanana ndi pulojekitala ya TV yokhazikika). Izi zimapangitsa kuti ikhale yofulumira kuposa SLA, chifukwa imatha kupopera gawo lonse la chinthucho nthawi imodzi (yotchedwa njira "yolinganizidwa"). Komabe, mtundu wa zigawozo umadalira mawonekedwe a pulojekitala ndipo umachepa kukula kwake kukakwera.

Monga kutulutsa zinthu, stereolithography inayamba kupezeka mosavuta chifukwa cha kupezeka kwa makina otsika mtengo. Makina oyamba otsika mtengo anali ozikidwa pa njira zoyambirira za SLA ndi DLP. Komabe, m'zaka zaposachedwa, mbadwo watsopano wa makina otsika mtengo kwambiri, ozikidwa pa magwero a kuwala kwa LED/LCD wabuka. Kusintha kwotsatira kwa photopolymerization ya vat kumadziwika kuti "continuous" kapena "layerless" photopolymerization, komwe nthawi zambiri kumachokera ku kapangidwe ka DLP. Njirazi zimagwiritsa ntchito nembanemba, makamaka mpweya, kuti zithandizire kupanga mwachangu komanso mosalekeza. Patent ya mtundu uwu wa stereolithography idalembetsedwa koyamba mu 2006 ndi EnvisionTEC, kampani ya DLP yomwe idasinthidwa dzina la ETEC, itagulidwa ndi Desktop Metal. Komabe, Carbon, kampani yochokera ku Silicon Valley, inali yoyamba kugulitsa ukadaulo uwu mu 2016 ndipo kuyambira pamenepo yadzikhazikitsa ngati mtsogoleri pamsika. Ukadaulo wa Carbon, wodziwika kuti DLS (Digital Light Synthesis), umapereka kuchuluka kwakukulu kwa kupanga komanso kuthekera kopanga magawo ndi zinthu zokhazikika zosakanikirana, kuphatikiza ma thermosets ndi ma photopolymers. Makampani ena, monga 3D Systems (Chithunzi 4), Origin (yomwe tsopano ili mbali ya Stratasys), LuxCreo, Carima, ndi ena, nawonso ayambitsa ukadaulo wofanana pamsika.