I just thought it would be helpful if you added to the article on restoring the arm rests that instead of JB Weld, you can use Gorilla Glue or its cheaper Equivalent, Elmer's Ultimate Glue. The benefit of using one of these is that the clamping time needed is much less.

 

I had trouble getting the JB weld to bond to the plastic. But after some more surface prep, I got it done.

 

with the gorilla glue, all i had to do was wipe down the foam and plastic with a very damp folded paper towel. It is some pretty damn strong stuff and it bonds well to the plastic