Wopanga mbale zotsekera zowopsa ayenera kutsimikizira kuwongolera kwa zida zonse za mbale-screw-instrument: tanthauzo lazinthu, zoyikapo, zotsekera zotsekera, makina, kumaliza, ukhondo, kutsimikizira, kuvomereza msika, kupezeka kwa seti ndi chithandizo chamoyo. Bukuli limasintha zofunikirazo kukhala khadi lachiwerengero laogawa.