Makhalidwe azida za helical:
1. Mukamangirira zida ziwiri zakunja, kuzungulira kumachitika mosiyana, pamene meshing ger yamkati ndi zida zakunja kuzungulira kumachitika mbali imodzi.
2. Chisamaliro chiyenera kutengedwa ponena za chiwerengero cha mano pa giya iliyonse pamene mukulumikiza giya yaikulu (yamkati ) yokhala ndi zida zazing'ono (zakunja), popeza mitundu itatu yosokoneza ikhoza kuchitika.
3. Kawirikawiri zida zamkati zimayendetsedwa ndi zida zazing'ono zakunja
4. Amalola makina opangidwa ndi makina
Kugwiritsa Ntchito Zida Zamkati:mapulaneti oyendetsa magiya otsika kwambiri, zowomba etc.