sheet metal workers manual a complete practical instruction book on the sheet metal industry machinery and tools and related subjects including the oxy acetylen welding and cutting process stum of a right cone which canbe developed by the radial method if the time is limited and only a few pieces are re quired there are several short methods which can be ap plied to the same purpose an approximate pattern de veloped by one of the short methods in common use isshown in c figure 174 and may be produced as followsdraw a center line as ab and on it fix a convenient pointe with th 2chw74p.jpg from 赛车虚拟竞彩彩票⅕⅘☞tg@ehseo6☚⅕⅘•stum View Photo