Wāhanga wira huri, wāhanga tapahi, rerekētanga wāhanga huri

He rerekē ngā momo me ngā whakamahinga o ngā wira huri, ngā wira tapahi me ngā wira whakakanapa, ā, mā ēnei e whakamārama te rerekētanga i waenganui i ngā mea e toru:
1. E ai ki ngā rauemi i whakamahia, ka taea te wehewehe i te wira huri ki: te wira huri kapia, te wira huri uku, te wira huri taimana me ētahi atu;
2. Ka taea hoki te wehewehe i te pepa tapahi ki: te pepa tapahi kapia, te pepa tapahi taimana, te pepa tapahi tāera, te pepa tapahi māpere, te pepa tapahi kowiri tira, te pepa tapahi ara, te pepa tapahi rori me ētahi atu.
3. He momo pepa whakakanapa anō hoki te onepū kōpae. He pepa whakakanapa porowhita te onepū kōpae kua tukatukahia ki te pepa whakakanapa, ka taea te wehewehe ki ngā momo e rua: te weriweri me te rīpene taha-rua. Ko te pepa whakakanapa te nuinga o te wā e whakamahia ana mō te whakakanapa taputapu. ngā taputapu, kirihou, ngā wāhanga motuka, ina whakamahia ana i te tere whakakanapa pepa kirikiri whānui. Ko te tau ko 60# 80# 100# 120# 150# 180# 220# 240# 320# 400#

Ko te tikanga rongonui ko te whakamahi i te wira huri, te wira huri mīhini huri, te wira huri niho, te wira huri kōhao, te wira huri noke, te wira huri ā-roto, me ērā atu mea;

Wira huri:
He taputapu huri tino noa te wira huri i roto i te tukanga huri, ko tōna hanga ka tāpirihia ki te here whakakoi, mā te whakakīkī, te whakamaroke me te tunutunu, ko ōna tawhā āhuatanga ko te nuinga o te whakakoi, te matotoru, te āhua, te pakeke, te here, te rahi me ētahi atu.
Nā te rerekētanga o ngā mea whakakoi, ngā mea here me ngā tukanga hanga, he tino rerekē hoki te wira huri whakamutunga, nō reira he pānga nui tō ngā mea whakakoi, ngā mea here me ngā tukanga hanga ki te kounga tukatuka me te hua o te huri.

Te whakarōpūtanga o te wira huri:
E ai ki te momo whakakoi, ka taea te wehewehe i te wira huri ki te wira huri whakakoi noa (te korundum me te silicon carbide, me ētahi atu), te whakakoi pakari ā-taiao whakakoi me te wira huri (te wira huri taimana me te porowhita boron nitride, me ētahi atu);
E ai ki te āhua, ka taea te wehewehe i te wira huri ki te wira huri papatahi, te wira huri kapu, te wira huri porotaka, te wira huri piko, te wira huri kōpae, me ētahi atu.
E ai ki te here, ka taea te wehewehe i te wira huri ki te wira huri whakarewa, te wira huri rapa, te wira huri kapia, te wira huri uku me ētahi atu.

Pepa tapahi:
Ko te pepa tapahi e pā ana ki te whakamahinga o te kapia whakakoi me te here i hangaia mō te tapahi i te maitai noa, te maitai kore waikura me te pepa kore-whakarewa. Ko te nuinga o te mea he muka karāhe me te kapia hei whakapakari i te rauemi here, me ngā āhuatanga teitei o te kume, te pānga me te piko, na reira e whakamahia whānuitia ana i roto i te hanga maitai noa, te maitai kore waikura me te kore-whakarewa.
E ai ki te rauemi, ka wehea te nuinga o ngā wahi tapahi ki ngā wahi tapahi muka kapia me ngā wahi tapahi taimana.
I roto i ēnei, ko te mea tuatahi he kapia hei here, he mata muka karāhe me ngā momo rauemi maha e honoa ana, ka taea te tapahi i te maitai koranu, te maitai kore waikura me ētahi atu rauemi mārō, he tino hira te mahi, ā, ka whakarite i te pumau o te tapahi, ka taea te whakapai ake i te pai o te tapahi, me te penapena i ngā utu whakaputa. Ko ngā tikanga tapahi he maroke me te mākū.
Ko te pepa tapahi taimana te mea e whakamahia nuitia ana mō te tapahi i ngā rori kōhatu, ngā rori hou me ngā rori tawhito, ngā papa kua oti te hanga, te raima, ngā uku me ētahi atu rauemi pakeke, pakarukaru hoki. E rua ngā wāhanga matua: he matihiko me te pane tapahi. Ko te matihiko te wāhanga tautoko matua o te pane tapahi kua herea, ā, ko te mahi tapahi ko te pane tapahi matua, nā te mea kei roto i te pane tapahi te taimana, hei rauemi tino pakari i tēnei wā, ka taea e te taimana te tapahi pai i te mea kua tukatukahia. Ka pakaru te pane taputapu i te wā e whakamahia ana, engari kāore te matihiko e pakaru.

Pepa whakakanapa:
Ko te pereti huri he whakamahinga o te kaha hikohiko teitei, ka whakatōkia ngā matūriki pai (alumina, silicon carbide rānei) ki runga i te kiriata polyester kaha teitei, kia anga atu ai te onepu katoa ki waho, kia koi ai te tapahi, kia pai ake ai te huri me te kanapa me te whai kiko o te oro, kātahi ka tukatuka mā te weriweri o muri, ka tapahia.
He koi te mata o te pereti huri hei whakarite i te pai o te hurihanga o te whitiki onepu; he rite te tohatoha o ngā matūriki huri ki te mata o te hua, me te whakamahi i te here motuhake hei ārai i ngā rārangi hōhonu me te koretake, he pai hoki te kaha ki te tango maramara, kāore e ngāwari ki te mono.
Ko te rahi o te matūriki he 240#, 320#, 360#, 500#, 800#, 1200#, 1500# me ērā atu.
He momo pereti huri te onepū kōpae. He porowhita te onepū kōpae, he mea huri mā te pepa huri, ka taea te wehewehe ki ngā momo e rua: te weriweri me te rīpene taha-rua. E whakamahia ana mō te whakakanapa i ngā taputapu taputapu, te kirihou, ngā wāhanga motuka, ā, ina whakamahia, he tere ake te huri i te pepa huri whānui. Ahumahi tono: E whakamahia ana i roto i te hanga whakarewa, te whakapaipai whare, te tiaki me ētahi atu ahumahi o ngā momo maitai kore waikura, maitai waro, rino, maitai koranu me ētahi atu momo tapahi rauemi.