Re: Is JB Weld a hole filler or a real metal replacement?
I can echo what others have stated and add a bit. i like devcon better but jb is good stuff. They are as hard as metal but not as tough i.e brittle. Their effectiveness has everything to do w/ surface preparation as well as application.
I've repaired gas tanks, crankcases, made molds/ fixtures for machining, tapped and machined them. They can be very useful!