Kara Rima, Komihana Whakarato

Ko ngā porotiti metara tino whakapipi he taputapu whakapapa tikangia kua hoahoaia mō ngā wā katoa o te whakapai ake i ngā mata metara, e whakamahi ana i ngā rahi piko tino iti—arā ko te 800 grit ki te 5000 grit—kia nekehia ai ngā kiriata iti, ngā papaku, me ngā whakapungawerenga mata e waiho ana e ngā whetoko kaha ake. Kua hangaia enei porotiti kia mahi tahi me te rohe nui o ngā metara, tae atu ki te maitai hauauru, te paraki, te toa parauri, te paraihe, me te titanium, kei te whakapono hoki i te whai waahi tika ake i te wā tonu e whakapai ana i te mutunga. Ko ngā taumata whetoko, ina heke pea ki te whakamahinga hauauru, te karipori hohonu, te pungaru rānei ki te ngohengohe i ngā metara u, ka tūhono tētahi ki te irirangi, ki te kiriata rānei ki te papanga muramura—pērā i te kiriata polyester rānei, te kiriata māmī—ka taea ai te whakahaere tikangia i te wehenga o te taraiwa. Ko te whirinakitanga tēnei e whakapumau ai i te porotiti ki te āhua o te metara, ahakoa te whakapae, te piko, te uaua rānei, kia kaua e whakaputua te pēhi nui ka taea ai e te whare herehere. Ko ngā porotiti metara tino whakapipi he tino uara nui ki ngā whakamahinga e hiahiatia ana ngā rohe tata, pērā i te whanaketanga taputapu hauora (kei hea ngā mata whakapae e whakakaha ai i te here tangata), ngā wāhanga rerewā (kia murua ai te tāwhai aerodynamic), me te taputapu tika (te whakapono i te tika o te tahumaero me te mahi). Ki te hanga taonga, ka whakamahia hei whakapai i ngā metara taonga ki te mutunga tino ataahua, e whakapai ake ana i te āhua anō rānei kāore e whakaroa i ngā āhua uaua. Ka whakahaerehia ngā porotiti nei i ngā tere iti ake kia muru i te whanake o te wera, ka taea pea te whakaputa i te panonitanga o te metara, te whakapoke rānei, ina he metara māmī ake pērā i te paraki, te paraihe rānei. Ka taea hoki e rātou te whakamahi i te tāone māmī mō te whakapai māmā, te wai rānei (ko te wai, te hinu minerā rānei) kia horoia ai ngā pārtikira metara, e muru ai i te kauta me te roa o te porotiti. Mā te neke i ngā takotoranga iti noa o te taraiwa, ko ngā porotiti metara tino whakapipi e whakapono ana i te kaha o te metara, e eke ana ki te Ra (ngā uara roughness surface) ki te 0.02 micrometers, na reira he mea nui ki te whakapai me te whakapai metara ki ngā umanga tika.