1. Ingagwiritsidwe ntchito yonyowa komanso youma.
2. Malo abwino ogwirira ntchito opanda madzi.
3. Ufa wa diamondi wa mafakitale wapamwamba kwambiri wosakaniza ndi resin bond, wogwira ntchito bwino kwambiri komanso nthawi yayitali yogwira ntchito.
4. Chophimba ndi nsalu ya nayiloni, chimatha kukwaniritsa zosowa zosiyanasiyana za chopukusira ndi manja, makina okonzanso pansi, ndi makina opukutira a ceramic.