1. Te tukanga o te roera porotakaroa e mau ana i te hangai → deburring, mowhiti ranei → te mata o te riipene hurihuri maeneene → te huri maeneene mata rua nga pito → waiariki waiariki → i mua i te huri taratara o te mata okeoke → te huri taratara mata rua o te pito → te pou o te huri taratara o te mata o te hurihanga → te huri mutunga o te pito rua kanohi → pai, huri huri mata hurihanga whakamutunga → tino whakaoti i te mata hurihuri → horoi, hoha → te ahua o te tirohanga whakamutunga, te whakarōpū inenga → te whakakii hinu.2. Te tukanga o te taper roera e mau ana te hangai → deburring, mowhiti ranei → whakakorikori ngawari te mata riihi → te huri ngohe mata rua nga pito → waiariki waiariki → huri taratara mata okeoke → pai huri huri mata okeoke → huri papa turanga poroporo → huri whakamutunga mata okeoke → super whakaoti mata okeoke → horoi, hoha → Tirohanga Whakamutunga Te ahua, Whakarōpū Ahu → takai hinuhinu.Ki te he iti iho i te 0.005 mm te convexity, ka taea te tukatuka tika etahi o nga roera i roto i te tukanga super-oti, takitahi e taea te i roto i te huri whakamutunga o okeoke mata huri tukanga i roto i te karauna, a ka ultra-oti.