Zida zozungulira zamkatiNjira yachikhalidwe imagwiritsa ntchito njira yopangira mano kapena yopangira mano. M'zaka zaposachedwa, kugwiritsa ntchito njira yopangira mano pamodzi ndi njira zina popangira zida zogwirira ntchito kwapindulanso bwino pazachuma. Kupalasa molimbika, komwe kumadziwikanso kuti kupanga ma hobbing kumaphatikiza ma hobbing, ndi njira yodulira ma giya mosalekeza. Ukadaulo uwu umaphatikiza njira ziwiri zopangira ma giya ndi kupanga ma giya. Kuchokera pamalingaliro aukadaulo, ndi njira yopangira pakati pa "mano opangidwa" ndi "kupalasa ma giya", komwe kumatha kupangitsa kuti ma giya agwire ntchito mwachangu ndi zofunikira zolimba. Kutengera ndi zofunikira za gawo, makina opalasa amatha kumangidwa pa maziko a shaft oyima kapena maziko a shaft yopingasa. Kapangidwe kakang'ono, kukhazikika kwa kutentha kwa makina ndi kulondola kwakukulu kwa ma hydraulic kumatsimikizira mtundu wa makina opangira, zomwe zimapangitsa kuti gawo lomaliza likhale lolimba kwambiri. Kutengera ndi momwe ntchito ikuyendera, makina opalasa amatha kuphatikizidwa ndi kupalasa ndi kutembenuza nkhope, kapena kuphatikizidwa ndi kupalasa, kuboola, kugaya kapena molunjika.magiya ozungulira, zomwe zimapangitsa kuti ikhale njira yabwino kwambiri m'malo mwa magiya.
Kuchita bwino kwa njira yopangira ma gear skiing ndi kwakukulu kuposa momwe ma gear hobbing kapena ma gear shaping amagwirira ntchito. Makamaka pankhani ya kuwonjezeka kosalekeza kwa ma gear amkati omwe amagwiritsidwa ntchito popanga zida zotumizira ma gear m'nyumba, ma gear skiving ring amphamvu omwe amagwiritsidwa ntchito mkati mwake amakhala ndi mphamvu zambiri pakupanga komanso mphamvu zambiri kuposa ma gear shaping.