Intloko ye-Trepanning ikwabizwa ngokuba yi-annular drill, sisixhobo soqoqosho, esinemveliso kunye nomgangatho ophezulu womngxuma onzulu, imveliso yayo ingaphezulu kwamaxesha e-drill eqhelekileyo.Kungcono ukusebenzisa isixhobo se-trepanning ukwenza umngxuma ongaphezulu kwama-50mm ububanzi.Esi sixhobo sisebenza kwezi meko zilandelayo:
I-1) I-diameter ye-Hole yi-50mm ngaphezulu, kunye nokunyamezela ngokusondeleyo ekuqondeni kunye nokuchaneka kwendawo.
2) 2) ubude bobude ukuya kububanzi bomngxuma kuluhlu lwe-1-75, lukhetho olungcono lokusebenzisa intloko ye-trepanning kunezinye iindlela zokutshiza.
3) Izinto zokusebenza zibiza kakhulu kwaye undoqo ufuna ukulinganisa kunye nohlalutyo lweekhemikhali, kwaye yonke ingundoqo kufuneka igcinwe.
4) Amandla omatshini awanele ukuba ubhobhoza umngxuma omkhulu, ngoko ke i-trepanning yinto efanelekileyo.Ifanelekile kububanzi obususela kwi-50 ukuya kwi-600mm (i-bar yesixhobo ehambelana nayo kufuneka isetyenziswe).