I read a post a couple of days ago about using vaseline to protect the joints of robart hinges from application of epoxy. Does this apply to flat-type hinges, rod-type, or both? I have recently bought the rod-type hinges to repair my Duraplane.

I need a good explanation of what to do with these things and why in the heck vaseline is used. Heating it up... what is that all about?

Thanks everyone!