I have a sheet metal part the was created by my predecessor. The 18 flanges at the top, bottom, and middle of the tank are already cut into the sheet metal part and I need to bend them inwards by 90 degrees. I also need to bend the 15 rectangular fins inward by at least 30 degrees.
I know it is possible because I have found examples like the one below online. I need to bend my flanges inward so they look something like this:
Can anyone tell me how to do this?