Performing a rounded metal ring without lathe machine

Performing a rounded metal ring without lathe machine. Was not so easy to perform a metal rounded ring out of a square thick metal sheet without lathe machine. i did this project & hoped that it works, & i realized a good result. i used different tools such as dremel tool, drill, angle grinder & other different tools. Timestamps 0:40 - cutting metal sheet 0:55 - drilling 1:05 - threading 1:25 - cutting bolt 1:42 - tracing 2:04 - drilling 2:15 - threading 2:28 - adjustment 3:03 - performing outer ring part 3:59 - tracing 4:19 - drilling 4:32 - preparation of the interior part 5:06 - sanding 5:23 - making the part in rotational movement 5:45 - sanding 6:15 - plugging metal holes 6:37 - sanding & polishing 7:00 - result