Ko te Rakuraku/Keri he hapa āhua e kitea ana i runga i te karāhe i te wā e tukatukahia ana. Ko te iti o te ōwehenga, ko te kaha ake o te paerewa. Ko te whakamahinga motuhake e whakatau ana i te taumata kounga me ngā tikanga whakamātautau e tika ana. Ina koa, e tautuhi ana i te āhua o te oro, te wāhi o ngā rakuraku me ngā keri.
Ngā karawarawa– Ko te tikanga o te karawarawa he "haehae" rārangi o te mata o te karāhe. Ko te taumata karawarawa e pā ana ki te whānui o te karawarawa, ā, tirohia mā te tirohanga ā-kanohi. Ka pā anō hoki te rauemi karāhe, te paninga me te āhua o te māramatanga ki te āhua o te karawarawa i tētahi taumata.
Keri– Ko te keri he poka, he rua iti rānei kei runga i te mata o te karāhe. Ko te tohu keri te rahi tuturu o te keri i roto i ngā haurau o te mirimita, ā, ka tirohia mā te whānui. Ko te whānui o te keri āhua koretake ko te ½ x (Roa + Whānui).
Ripanga Paerewa Rakuraku/Keri:
| Te Tohu Rakuraku/Keri | Whānuitanga Mōrahi o te Rakuraku | Te Diameter Mōrahi o te Keri |
| 120/80 | 0.0047” (0.12mm rānei) | 0.0315” (0.80mm rānei) |
| 80/50 | 0.0032” (0.08mm rānei) | 0.0197” (0.50mm rānei) |
| 60/40 | 0.0024” (0.06mm rānei) | 0.0157” (0.40mm rānei) |
- E kiia ana ko te 120/80 te paerewa kounga arumoni
- Ko te 80/50 te paerewa whānui e whakaaetia ana mō te paerewa whakapaipai
- E whakamahia ana te 60/40 mō te nuinga o ngā tono rangahau pūtaiao
- 40/20 te paerewa kounga taiaho
- Ko te 20/10 te paerewa kounga tika o ngā whatu
He kaiwhakarato tukatuka karāhe hohonu rongonui o te ao a Saida Glass, he kounga teitei, he utu whakataetae, ā, he wā tuku tika hoki. E whakarite ana i ngā karāhe ki ngā momo mara maha, ā, he tohunga ki te papa pa, ki te karāhe whakamaroke, ki te karāhe AG/AR/AF me ngā mata pa o roto, o waho hoki.
Wā tuku: Hepetema-11-2019