Kei roto i te tukanga whakaputa he pūnaha kohikohi puehu (e tutuki ana ngā tukunga i ngā paerewa ā-motu), ā, neke atu i te 90% te tere whakaora o te karāhe pakaru. Ko ētahi hua e whakamahi ana i te hangarau kore-mata. Ka taea te hangarua 100% i ngā ipu takai karāhe. Neke atu i te 90% te tere whakaora o te karāhe pakaru. Me whakauru he pūnaha kohikohi puehu ki te tukanga whakaputa, ā, e tutuki ana ngā tukunga i ngā paerewa ā-motu.
Whakatenatenahia te whakamahinga o ngā hangarau mama (te nekehanga mama ≤ 1.0).