How Long Does Bondo Take To Cure?

How long will Bondo last

I stripped my car down last summer and there were gobs of bondo on the quarter that I replaced.

It appeared to have been there for many years.

I would say it will last as long as the paint job..

Is it OK for Bondo to get wet

You can wet sand plastic body filler (“Bondo” is a trade name like “Chevrolet” or “Nike”) but you should carefully heat the filler with a blow torch before priming. Just take a blow torch and quickly wave it across the filler and you will see the moisture evaporating right before your eyes.

What will Bondo not stick to

Clean and sand or scuff the surface to prepare it for body filler — it will not adhere to smooth, dirty or oily surfaces. Generally, if paint will stick, so will Bondo. … Conversely, if there’s an area you don’t want Bondo to stick to, apply a release agent (see tools and materials) or use Scotch tape or wax paper.

Why is Bondo bad

Just be careful. Bondo will not stop rust so if it is used to cover an area without the proper prep work the panel will continue to rust from the inside out. Even if you watch the big shots on TV restoring a car, they will use a skim of body filler or putty over the entire car and block it all smooth.

How do you fix a bad Bondo job

Grind all the paint and bondo off that area and see if it’s a pop riveted patch, or bubbling rust, or who knows what. Then a proper fix will require removing ALL of the rust and buggers, and welding in a solid repair. Then properly hammering it to shape, and a skim coat of filler, then paint.

Will Bondo fall off

There is no minimum thickness for Bondo, but there is absolutely a maximum. You do not want to apply body filler to anything that is thicker than about a 1/4”. That does not mean it can’t be done, but the repair will not last as long. Eventually the filler will shrink and possibly crack or even fall off.

Can u put Bondo over primer

Can you apply body filler or bondo over primer filler? Yes. … You CAN apply over sanded 2k primer, or bare metal. Be sure to have the area sanded with at least a 150 so the filler has some TOOTH to grab to.

How long does Bondo take to dry without hardener

Bondo mixed to the color swatch will begin to cure in less than 10 minutes at room temperature. Too much hardener in a warm environment will reduce working time, but too little in a cool environment can result in maddeningly long curing times. A heat lamp can speed curing in colder weather.

How do you smooth out Bondo

How do you smooth Bondo?Use 80 grit paper to rough out the filler and finish sand with 180 grit sandpaper. If there are any places the sandpaper didn’t touch (too low) you will need to add another coat. … Similarly, what grit sandpaper do I use for Bondo? … Generally, in a matter if a few minutes it will start to harden and get rubbery.

How long can Bondo be left unpainted

about 2-3 weeksBetween life and work, the longest time period the bondo would go Unpainted would be about 2-3 weeks.

Does Bondo get old

Re: What’s the shelf life of Bondo and hardener if it was cold for any long length of time, the hardener separates and goes bad. No matter how much kneading you do it never seems to mix again. age can affect it too. if it has been sitting around for a long time (year or more) it can go bad.

What temperature should I apply Bondo

Bondo said: FREQUENTLY ASKED QUESTIONS (FAQ) What is the lowest temperature that body fillers can be used in? 45° – 50°F (7° – 10°C); if using below 65° F, the amount of hardener used should be slightly increased. 12/2/14 4:07 p.m. Bondo says 45-50 degrees.