Umgubo ubekwa kwibhanti yentsimbi esezantsi ukuze usebenze ngaphakathi kumatshini. Inkqubo yokucinezela yenziwa ngokusebenza okudibeneyo kweebhanti zentsimbi ezimbini kunye neerola ezimbini zokucinezela, kwaye umgubo ucinezelwa "ngokuqhubekayo" kancinci kancinci phantsi koxinzelelo olulindelekileyo.