Nā te whakamahi i ngā pai me ngā āhuatanga o ngā kōpūtahi, ka whai wāhi te tāhure kōpūtahi ki ngā mahi iti nui rawa atu i te whenua. I roto i te pūnaha matihiko, ka tāhure kōpūtahi i ngā pirima me ngā lenzu ki tētahi tahitanga mikrona. Hei whakamahere OD, ka whakamahi i ngā rautaki tāhure e mohio ana ki ngā hiranga, nō reira ka whakamahi ngā rautaki ā-matawhāiti e āhei ana ki te tirohia ngā huinga ā-āhuatanga o ngā kōmponeta matihiko ā-matawhāiti. Ki runga i te whēako o te pūnaha hiko, ka hangaia ngā raukura tūranga hiko hei whakarite i te tāhure kōpūtahi. Ka taea te waehanga i ngā kōmponeta hiko itiiti, pēnei i ngā papa hiko tuhituhi, me te whakamahi i ngā rautaki CNC matua hei whiwhi i te tau ā-wāhanga.