Kuboola mbali zisanu ndi chimodzi za bolodi ndi mipata mbali zakumtunda ndi pansi za bolodi kungathe kuchitidwa ndi clamping imodzi;
Kapangidwe ka chigwiriro champhamvu cha zingwe ziwiri chimachepetsa kusintha kwa chigwirirocho ndipo chimapangitsa kuti ntchito yake ikhale yogwira mtima kwambiri.
Phukusi la kubowola kawiri limagwira ntchito bwino kwambiri.