
Ukhiye we-carbide gun drill feather umhlahlandlela owenziwe ngokunemba kanye nengxenye yokubeka yokubhoboza isibhamu se-carbide (amathuluzi okumba i-deep-hole). Iqinisekisa ukusika okuzinzile, ukuqondanisa kwembobo okunembile, nempilo yamathuluzi enwetshiwe ngesikhathi somshini wembobo ejulile enembayo. Yenziwe nge-premium tungsten carbide (WC-Co) enobuchwepheshe bokunamathela obuphambili, iletha ukumelana nokugqokwa okukhethekile kanye namandla okuthwala umthwalo ezindaweni zomshini ezinokhahlo.