Ama-wedge ensimbi aqiniswe ngokushisa ashaywe angene emifantwini yokhuni noma yedwala ukuze asabalalise ukuqhekeka futhi ahlukanise into. Asetshenziswa emgodini wamatshe (ukuqhekeza itshe ngokulandela umnsalo walo wemvelo), ekugawuleni (ukuwisa nokuqhekeza izingodo) nasemsebenzini wensimbi (ukukhipha ithuluzi elinamathele).