Yakagadzirirwa ne-pre-cut, kuchengetedza zvinhu, kureba kwechigadzirwa chakapedzwa kunopindirana, uye kunyatsojeka kwakakwirira. Pre-punching is mold punching, uye nzvimbo yekubaya ndiyo chaiyo. Tsvina yakaputsika inotsvedza pasi nemakomba mativi ese kuti zvive nyore kudzokorodza.
Iyo giya bhokisi inofananidzwa neyepasirese majoini kutapurirana, iyo ine simba rakasimba, inorema kutakura, inokurumidza kukurumidza uye yakagadzikana zvakanyanya.
Iwo maviri mota akagoverwa pamativi ese, saka simba rinowedzera kuenzana uye kurasikirwa kwemuchina kudiki.