SLA

Stereolithography (SLA) bụ teknụzụ nyocha ngwa ngwa a na-ejikarị eme ihe. Ọ nwere ike ịmepụta akụkụ polymer zuru oke na nke zuru oke. Ọ bụ usoro prototyping mbụ ngwa ngwa, nke 3D Systems, Inc. webatara na 1988, dabere na ọrụ onye mepụtara Charles Hull. Ọ na-eji laser UV dị obere, lekwasịrị anya nke ukwuu iji chọpụta akụkụ obe na-aga n'ihu nke ihe nwere akụkụ atọ n'ime vat nke polymer photosensitive mmiri mmiri. Ka laser na-enyocha oyi akwa ahụ, polymer na-esiwanye ike na ebe ndị ahụ gafere dị ka mmiri mmiri. Mgbe oyi akwa gwụchara, a na-ebugharị agụba ọkwa n'elu iji mee ka ọ dị nro tupu idowe oyi akwa ọzọ. A na-ewedata ikpo okwu site n'ebe dị anya hà nhata oyi akwa (nke na-abụkarị 0.003-0.002 na), a na-emepụta oyi akwa na-esote n'elu ọkwa ndị emechara mbụ. A na-emeghachi usoro a nke ịchọta na ire ụtọ ruo mgbe arụchara ya. Ozugbo emechara, a na-ebuli akụkụ ahụ elu n'elu vat ahụ ma kpochapụ ya. A na-asacha ma ọ bụ kpochaa polymer karịrị ya n'elu. N'ọtụtụ ọnọdụ, a na-enye ọgwụgwọ ikpeazụ site n'itinye akụkụ ahụ na oven UV. Mgbe ọgwụgwọ ikpeazụ gasịrị, a na-ebipụ ihe nkwado ahụ ma na-egbuke egbuke, na-agba aja ma ọ bụ gwụchaa.