1) Forging 8620 Cov Khoom Siv Raw Rau Hauv Bar
2) Ua ntej-tshav kub kho (li qub lossis quenching)
3) Tshuab dhos ua kom huv rau qhov ntev ntev
4) Hobbing cov nqaj (hauv qab video koj tuaj yeem tshawb xyuas seb yuav ua li cas rau hob lub spline)
5)https://youtube.com/shorts/80o4spawruk
6) Kev Kho Mob Cua Sov
7) Kuaj