Classic Car Restoration: Body Work : How to Mix Body Filler for Car Restoration

Classic Car Restoration: Body Work : How to Mix Body Filler for Car Restoration

Hi, I’m Doug I work with 20 great guys in
Saint Louis at Doug Jenkins Custom Hot Rods and we are going to do some work for you today
on Expert Village. Now Alex is going to be mixing the traditional body filler. There
are several different brands of this 3 different brands that we use and like most things you
get what you pay for. So we buy the most expensive kind of body filler. When you are mixing body
filler you want to be careful to fold it over and mix it thorough but you don’t want to
mix it to aggressively. If you mix it too much and do it at the wrong angle, if you
fold it too much, you would get area bubbles in it and when you go to spread it, those
air bubbles may or may not show. But when you sand it you would end up with little pin
holes that you have to fill later. So mix it carefully, mix it slowly, and mix it with
the right amount of filler and follow the directions. When you mix the filler and the
hardener use the right amount of hardener the directions say about 1 inch of hardener
for every golf ball size bit of body filler. That is a good frame of reference. If you
put to much hardener in there it actually slows down the filler from setting up when
it is on the car. If you to little it slows it down as well.

About the Author: Michael Flood


  1. i can see youre point, but the guy here did use way too much hardner. but it would be stupid if he wanted it to dry quickly when he has a pound of filler there that he cant get spread out in time before it dries. wasteful…

  2. great video, but too much hardener really just makes it harden superfast. it also makes the hardened glob get super hot, like it was in an oven.

  3. u guys obviously havent worked with body filler. More hardener means it will actually harden slower and not set correctly.

  4. By slow, he means fast lol
    That guys hand was literally whipping around to mix it.
    Slow would be about 1/4 that speed, duh!

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