Izicathulo zediski, ezisebenzisa izinkinobho zediski ezisebenzisa ukukhweleka okuphambene kwezitayela nezitripu, kanye nokukata izitripu kwiqembu elilula, noma ukukata amabhulokisi abo phezu kwamathumbu. Uma kusebenzisa ukuqoqa amathumbu, kuyadingeka kakhulu ukuthi kube ne-edge breaker noma ukuphambuka kwamathumbu okwesibili ukuze kwenze ukuthuthukiswa kube lula.