SLA

ʻO Stereolithography (SLA) ka mea hoʻohana nui loa i ka ʻenehana prototyping wikiwiki.Hiki iā ia ke hana i nā ʻāpana polymer pololei loa.ʻO ia ke kaʻina hana prototyping wikiwiki mua, i hoʻokomo ʻia i ka makahiki 1988 e 3D Systems, Inc., ma muli o ka hana a Charles Hull.Hoʻohana ʻo ia i ka laser UV mana haʻahaʻa, nānā nui ʻia e ʻimi i nā ʻāpana keʻa o kahi mea ʻekolu-dimensional i loko o kahi pahu o ka polymer photosensitive wai.Ke ʻimi nei ka laser i ka papa, paʻa ka polymer a waiho ʻia nā wahi keu e like me ka wai.Ke hoʻopau ʻia kahi papa, hoʻoneʻe ʻia kahi lau hoʻopalikelike ma luna o ka ʻili e hoʻomaʻamaʻa iā ia ma mua o ka waiho ʻana i ka papa aʻe.Hoʻohaʻahaʻa ʻia ka paepae ma kahi mamao e like me ka mānoanoa o ka papa (maʻamau 0.003-0.002 in), a ua hoʻokumu ʻia kahi papa hope ma luna o nā papa i hoʻopau mua ʻia.Hoʻopili hou ʻia kēia kaʻina o ka ʻimi ʻana a me ka hoʻomaʻamaʻa ʻana a hiki i ka pau ʻana o ke kūkulu ʻana.Ke hoʻopau ʻia, hoʻokiʻekiʻe ʻia ka ʻāpana ma luna o ka pā a hoʻokahe ʻia.Holoi ʻia a holoi ʻia paha ka polymer mai nā ʻili.I nā manawa he nui, hāʻawi ʻia kahi hoʻōla hope ma ka waiho ʻana i ka ʻāpana i loko o ka umu UV.Ma hope o ka hoʻōla hope ʻana, ʻoki ʻia nā kākoʻo i ka ʻāpana a poni ʻia nā ʻili, one a hoʻopau ʻia paha.