Ukuqina Okugqwesileyo kunye Nokuqina

Njengoko idizayini yolwakhiwo entsha, amandla aphezulu, uzinzo oluhle kakhulu, kunye nobomi benkonzo ende, esi sixhobo sibonelela ngokuchasana okungcono ngexesha lokutyumza, kwandisa ukusebenza kakuhle kokutyumza malunga ne-10% ukuya kwi-30%; ingalo yaso yesando ikhusela i-breaker, inciphisa izinga lokusilela kunye nokuphindaphindeka kokuqhekeka kwentonga ye-chisel, ngelixa inciphisa ukungcangcazela ukuze inike amava angcono okutyumza.