Kutentha kwambiri komanso kuthamanga kwambiri 1: 3 otsika osambira opulumutsa mphamvu makina odaya a bobbin, makinawa ndiwotsogola kwambiri, opulumutsa mphamvu kwambiri, makina okonda zachilengedwe, amathyolatu makina achikhalidwe odaya utoto.
Pansi pa chikhalidwe chosasintha choyambirira chopaka utoto, chingalole wogwiritsa ntchito magetsi, madzi, nthunzi, othandizira ndi maola a munthu kuti akwaniritse kuchepetsedwa kwathunthu, ndipo akhoza kuthetsa mtunduwo ndikuchepetsa kwambiri kusiyana kwa silinda.