A Boyin amachitira makina aliwonse, mphuno iliyonse ili ndi chisamaliro.Maphuno ali ngati ana athu, amafunikira chisamaliro chosamala, chodekha komanso chodekha. Kenako, a Boyin apitiliza kufotokoza momwe angasungire makinawo ndi ma nozzles m'nyengo yozizira② Samalirani osankhidwa osasunthika.