1) Karkatar da albarkatun ƙasa 8620 zuwa mashaya
2) Are-zafi bi da (daidaito ko saukar da)
3) Laithe ya kunna girman m
4) Hobbing spline (a ƙasa bidiyo da zaka iya bincika yadda ake yin hob da
5)https://yutube.com/shorts/80o4Spawruk
6) carburizing zafi magani
7) Gwaji