I-DIN6 ukunemba kwegiya le-helical langaphakathi .Ngokuvamile sinezindlela ezimbili zokuhlangabezana nokunemba okuphezulu.
1) I-Hobbing + ukugaya igiya langaphakathi
2) Ukushushuluza ngamandla kwegiya langaphakathi
Kodwa-ke kumagiya amancane angaphakathi kwe-helical, ukuhobha akulula ukusetshenzwa, ngakho-ke ngokuvamile sizokwenza i-power skiving ukuze sihlangabezane nokunemba okuphezulu kanye nokusebenza kahle okuphezulu .Ngegiya elikhulu le-helical langaphakathi, sizosebenzisa indlela yokugaya kanye nokugaya.Ngemuva kokushushuluza amandla noma ukugaya, insimbi yebhokisi eliphakathi njenge-42CrMo izokwenza i-nitriding ukukhulisa ubulukhuni nokumelana.