1) Qinisekisa ukuba i-chill yombhobho we-Drill Pray (kunye nenkxaso yombhobho we-Drill kuyo), isikhokelo seSixhobo Sleeve, i-Spindleck Spingle kunye nebhokisi yombhobho ye-PRODLE. Isikhokelo sololiwe sebhedi yebhedi yeHole enzongonzongo sihlala isikhokelo esiphindwe kabini kuloliwe ofanelekileyo kumatshini womatshini onzulu weHole, onobungakanani obukhulu bokukhokela; Uloliwe osisikhokelo sele ucinyiwe kwaye unenteko ephezulu. I-HOLE ROLE DRULLS isetyenziselwa ukuqhubela phambili imingxunya enzulu kunye ne-Aperture Ratio (D / L) engaphezulu kwe-1: 6, enje ngemingxunya enzulu kwiindawo ezifana nemipu, kunye nesixhobo somatshini kunye nesixhobo somatshini kunye nesixhobo somatshini.

2) Uhlengahlengiso olungenakwenzeka ngesantya sokuhamba kwesantya sokutya.

3) Uxinzelelo olwaneleyo, ukuhamba nokuhamba kunye nokucoca inkqubo yokuhlawula amanzi.

I-4) Umngxunya onzulu we-hole unolawulo lokhuseleko olubonisa izixhobo, ezinje ngomthwalo we-spiele (i-Torque) igeji, ukusika isantya sokulinganisa, ukusika isantya sokuhamba kwamanzi, ukunqunyulwa kwendlela yokuhamba kwamanzi, ukunqunyulwa kobushushu be-flud, njl.