Budi Handoko is a 12th grade student at SMK Tunas Bangsa Tawangsari who has participated in various metalworking activities during his vocational training, including cutting iron, drilling holes in metal plates, lathe work, and welding. These projects provided experience but also challenges like broken tools and mistakes due to inexperience. He completed a training program at CV Suratman Bersaudara in 2011 which provided valuable work experience.