How To Mix Body Filler

How To Mix Body Filler

When new to auto body, there are some procedures that are not exactly clear. Many cream body fillers and hardeners instruct you to apply 4 to 5 drops of hardener to a golf ball size of body filler. Well this is insane as the cream hardener doesn’t come out in drops plus it wouldn’t be enough anyway. See how a professional mixes body filler and understand the concept of how temps and weather can effect it.

To learn how the professionals use body fillers and apply them, follow this link so you can learn auto body and paint like a pro within 2 hours. You will get not only a FREE eBook that will practically teach you all you need to know in Auto Body but also a free MIG welding guide book:

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It would be nice if the cans or bottles of body fillers came with pictures or better instructions but they don’t. Temperatures and weather can effect body fillers excessively. On extremely hot summer days, especially dry days, you would use very little hardener in your mix as body filler will cure within 2 minutes even being mixed on the light side.

If the weather is really cold and moist, you may have to mix more hardener than you would think it should have just to get it to harden within 5 minutes.

It is really better to get you mix a little on the hot side, meaning a little too much hardener than too much on the light side. If you do not put enough hardener in your mix and then go apply it, it may never cure up enough to even sand it, you definitely won’t be able to paint over it. On the same note, if you mix way too much hardener in your filler mix, there is a bleach in the hardener and this can come back in your paint jobs later.

The trick is to add just enough hardener where it will harden within about 3 to 5 minutes and become completely sandable in about 15 to 20 minutes. The best practice is to wait at least 30 minutes before sanding and working your fillers after applying them.

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[renew]

Thanks for simplifying the mixture ratio, you are a pro, a teacher, a father and indeed a professional.

[Britkong]

Excellent video, now I know how the Pro's do it.

[erwin]

It's nice having review videos like this, for those of us who haven't mixed this stuff in a while.

Thank you very much!

[donbazan]

You're not supposed to mix it with a stick. Create hair bubbles.

[briannekeenatch]

This sucks I just purchased this got in to my project and mixed all my body filler wrong

[donbazan]

Everything's good except you're not supposed to use cardboard.

[mra]

I used your method and the filler turned to cottage cheese too fast and it became unusable. I cut down the amount by half of what you showed and was able to use that amount without it turning to cottage cheese.

[HNatureTV]

Thanks for the review. Any tips on how to prevent the body filler from cracking after being installed?

[kennethugochukwu-cvfi]

I need a link to cream hardener production video please

[heinricheugenvonhelmbrecht]

Thank you! It is a nice tutorial! I use body filler once in a few years and it is nice to refresh my memory before starting a new car project as I plan to do today. Blessings!

[nikowaqaisavou]

I love this video because it is easy to follow, this will be my first time, thanks.

[robertmelanson]

Looks like the amount of hardener corresponds to a line drawn between 10 o'clock and 2 o'clock on the circle of filler. Thanks for the demo!

[brianberriault]

We're from Gibson Tech, thank you for the informative video.

[dejayvanhorn]

Thanks for posting the video It really helped me out a lot

[joserivera-vskw]

best video n information i have seing...thank you

[cyborg]

On god rodshop best video I’ve ever watched 😮

[steveleston]

is the rule of thumb 1/2" high blob of bondo then across the blob.

[tuffy]

why is some hardener red and some blue?

[trentonware]

We’re from Gibson tech and this video was very helpful❤️

[jeffparker]

Thank you for demonstrating EVC products but please do not use cardboard to mix filler on. Cardboard is very porous and will change the chemistry of the product by absorbing the resin so the filler may not perform as well as it should.