Wongola ndi kudula makina okhala ndi makulidwe angapo omwe amapezeka, makulidwe osiyanasiyana okhala ndi zodzigudubuza zosiyanasiyana za gawo losanja.
Kwa makinawa, makina athu amatha kufanana ndi makulidwe angapo, makamaka malinga ndi makulidwe anu ndi m'lifupi, chizindikiro ndi mtengo zidzakhudzidwanso ndi makulidwe awa.
Kunenepa kumakhudza manambala odzigudubuza' a gawo losanja. Ndipo makinawa amatha kupanga pepala lopaka malata ndi pepala lozizira lopiringizika ndi makulidwe osiyanasiyana kuchokera ku 0.3- 3mm, mitundu ingapo ilipo.
Zodula ndi Cr12 zokhala ndi mphamvu zolimba komanso zolimba kwambiri.