I.Nhanganyaya yeChigadzirwa:
Chigadzirwa ichi chine hwaro hwemuenzaniso uye gumi zvakasiyana-siyana zveplate yepakati, zvakakodzera ukobvu hwemuenzaniso (0.1 ~ 0.58 mm, huwandu hwese hwezvinotsanangurwa gumi, nemaplate akasiyana epakati, anogona kuchinjika kune ukobvu hwakasiyana hwemuenzaniso. Chinoshandiswa zvakanyanya mukugadzira mapepa, kurongedza uye kutarisa kunaka kwechigadzirwa uye maindasitiri nemadhipatimendi. Ichi chishandiso chakakosha chekuedza simba rekumanikidzwa kweringi repepa nekadhibhodhi.
Nhamba 1 0.100-0.140 mm
u Nhamba 2 0.141-0.170 mm
u Nhamba 3 0.171-0.200 mm
u Nhamba 4 0.201-0.230 mm
u Nhamba 5 0.231-0.280 mm
Nhamba 6 0.281-0.320 mm
Nhamba 7 0.321-0.370 mm
Nhamba 8 0.371-0.420 mm
Nhamba 9 0.421-0.500 mm
Nhamba 10 0.501-0.580 mm