We present this second technique specifically for those who are looking for ways to bend or the results of a job that forms arches on iron hollo without roll and iris or bending .. We use a 5x5cm hollow steel bar using the coak technique and we shape and pattern an arch of an iron plate that we have measured precisely with and take a quarter circle with the diameter of 25cm we cut, and we bend the arches to the hollow that we coaked earlier then welding and finally forming a perfect curve of 90 °. And that is why it is called the secret of bending, for some people this may be a common thing but still many friends who do not know this bending technique. hopefully can help and be an inspiration. To see other ways of bending please look at the video below, we have many bending techniques that you can use and practice as needed. technique which is again viral 1: // • Secret profile pipe! W... # 2 hollow iron bending technique • Teknik BENDING hollow ... # 1 profile wood bending technique • how to bend profile wo... # 2 wood profile pipe bending technique • How to bend Profile pi... # 3 wood profile pipe to 90 degree • #2 How to Bend profile... #teknikbending #bendingbesihollow #bendingmanual #weldertasik