Have any of you made a bracket to block the ends of the expansion chamber to allow it to be pressurized for dent removal?
I have found these
http://www.24mx.com/pipe-repair-kit
but as i am intending to remove the dents using water pressure i am not sure if these will seal properly. Any of you made any other tools for this - and any of you using water pressure? see the video link below:
https://www.youtube.com/watch?v=LTPhjaKfQRA