[Tigers] Bondo removal

[PhastPhill at aol.com]

As a retired body man I would remove all the old body filler. You don't  know 
what is under there unless you remove it. Not that many years ago these  cars 
were not that valuable, repairs were often done at an "ok " level, like  
getting your second car painted at a Macio "special". It could be a dent  that 
with some good hammer and dolly work could be worked back to needing just a  thin 
skim of filler. It could be a patch riveted on, or as was common up to  the 
90's brazed on over the hole. You want to do a better job if you have taken  
the car this far. Proper metal repairs, done professionally are the least amount 
 of the expense of a body and paint job. Modern fillers are much better than 
they  used to be, and if done properly the repairs will only need a thin skim 
of  filler. Never more than 6 mil and preferably much less than that. For 
metrically  challenged 6 mil is a quarter inch appox. As Tim mentioned just warm 
it, and you  don't need that much heat, and you can scrape it right off. Or 
grind if you  like, be careful as you can generate enough heat with a big grinder 
and coarse  grit to warp a panel as well. Mater of fact be damn careful with 
a  body  grinder anytime you use one, I have seen lots of people injured and 
had a few  nicks my self. Anyway just my two cents......cheers