1. Chida chopangira makina kapena kukonza ulusi wakunja.
2. Ndilofanana ndi mtedza wokhala ndi kulimba kwambiri, ndipo pali mabowo angapo ochotsa tchipisi mozungulira zibowo zomangira, ndipo ma cones odulira nthawi zambiri amapukutidwa mbali zonse ziwiri za ma screw bowo.
3. Kufa kwachibadwa kumagawidwa kukhala phula lolimba ndi phula labwino, lomwe lingathe kukonza ulusi wamba wakunja wokhala ndi 6g kulolerana zone.