Kata hanyuma uhetamye umuyoboro wumuringa muburyo bwa Hairpin Bender na Tube Cutting Machine, hanyuma ukoreshe umurongo wanyuma kugirango ukubite feri ya aluminiyumu. Ubutaha urudodo, reka reka umuyoboro wumuringa unyure mu mwobo wanyuma, hanyuma wagure umuyoboro kugirango byombi bihuze neza na verisiyo yagutse cyangwa yagutse. Noneho uzunguruze umuringa wumuringa, kanda kugirango urebe niba yamenetse, guteranya bracket, na pack nyuma yo gutsinda igenzura ryiza.