1. Kulondola kwapakati pamunsi mwakufa ndipamwamba, kulondola kumatha kufika ku 1-2um (0.002mm), ndipo ntchito yokhazikika imakhala yapamwamba panthawi yopanga.
2.Zilibe malire ndi chiyambi cha pansi, ndipo zingagwiritsidwe ntchito pa chipinda chachiwiri kapena pamwamba.
3.Mawonekedwe osiyanasiyana ogwiritsira ntchito, amatha kulumikizidwa ndi mzere wopanga kuti akwaniritse zokha zokha.