3M Bondo 261 Lightweight Car Body Filler. This lightweight product is a two-part body filler. … Permatex 25909 Liquid Metal Filler. Unlike the Bondo filler, the Permatex product is ready to use, it does not need any mixing. … Evercoat 156 Lightweight Car Body Filler.

What is the easiest body filler to work with?

Polyester glazes can be used to fill scratches and very small dents. They can be applied over bare metal, fiberglass, other fillers, and cured 2K Coatings. They are thin and easy to work with.

Is it better to use Bondo or fiberglass?

I primarily use fiberglass to cover up weld areas… the fiberglass putty will resist water and keep everything sealed up so you dont’ get rust in those joints… then I sand that down, and apply the bondo over that, real thin, just to fill in the holes and give it a smooth look.

What is the difference between body filler and putty?

Putty is essentially a thick paint with a filler material – it’s generally used for very small scratches where the metal is not exposed. Air hardening. Body filler is a polyester resin suitable for small dents. Chemical hardening, a cheap and easier (by a long way) substitute for body solder.

Why is Bondo bad?

Unfortunately, filling compounds such as Bondo also present some drawbacks. Fillers like Bondo can crack if they are mixed too thickly, harming rather than improving the look of the car. Additionally, there’s a risk of discoloration and poor long-term wear when you use a dent repair filler like Bondo.

What is the yellow body filler for cars?

Duraglas Fiberglass Filled Filler 1 Gallon Duraglas(R) body filler is the original fiberglass reinforced automotive body repair filler. Formulated with short-strand fiberglass fibers, Duraglas provides ultimate strength and durability on rust-outs, holes, tears and cracks. Ideal for use on metal and fiberglass panels.

Is there a better body filler than Bondo?

Permatex 25909 Liquid Metal Filler Unlike the Bondo filler, the Permatex product is ready to use, it does not need any mixing. This filler is compatible for many materials, but only comes in a small tube. Due to this, it is designed for small areas of damage to be repaired (such as cracks and holes).

Do body fillers crack?

All these products are designed to move with the bumper so the material does not crack. Body filler is also not designed to adhere to a plastic surface the way that it adheres to metal. … This ensures that while sanding and while the bumper moves, the material will not chip away or detach from the surface.

Can you use body filler over primer?

Applying body filler over epoxy primer provides maximum corrosion protection for the metal. Apply filler within seven days of applying epoxy primer to maximize adhesion.

What causes pinholes in body filler?

Pinholes are caused by air entrapment within the plastic body filler and are exposed during the sanding operation of the filler by the body man.

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What is NC putty?

NC Putty is an one component fine putty on nitrocellulose base of good adhesion to iron, steel and hard, sanded old coatings.

Is Bondo glass the same as Bondo body filler?

Bondo-Glass is a unique reinforced filler containing short, interlocking fiberglass strands and fibers that make it twice as strong as regular body filler. … Eliminates the need for backing strips, fiberglass resin or cloth on small holes and rusted out areas.

Is fiberglass body filler waterproof?

Choose between Bondo Fiberglass Resins, Bondo Fiberglass Repair Kits or Bondo Body Fillers. Bondo Fiberglass Resins and Repair Kits are 100 percent waterproof. Because they do not shrink, they are excellent sealers.

How long can Bondo be left unpainted?

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

How long is body filler good for?

When stored at the recommended conditions in original, unopened containers, this product has a shelf life of 16 months from the date of manufacture.

Do auto body shops still use Bondo?

Yes auto body shops still use Bondo and other fillers. It is a great product and if used properly, thin applications, it works great. Most Bondo problems are due to excessive thickness and improper application.

Do you need primer over Bondo?

You should use a “direct to metal” (DTM) primer to help top coats stick to the metal but it’s not needed under body filler most of the time. Once the metal is primed then you can apply a “filler primer” (2K) to help hide scratches and minor surface irregularities.

How thick can you put Bondo on a car?

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 pop off!

What is the easiest body filler to sand?

The filler I’ve been using with great results is the 3M Platinum Plus easy to sand and no pin holes . After filling don’t forget to HiFill to level the surface and sand off. If not using HiFill prime then putty sand flat then prime again . There are also a professional range of paint products for timber/wood products .

Do professionals use Bondo?

Automotive plastic body filler, often times called “Bondo,” is used quite frequently for automotive repairs and restorations. … Professional, high quality shops use body filler on custom cars and restorations continuously.

Is UPOL body filler any good?

5.0 out of 5 stars great filler BUT PACKAGING NEEDS MAJOR WORK! This filler is great BUT THE SELLERS PACKAGING NEEDS TO BE HANDLED IN A BIG WAY.

Does Bondo harden without hardener?

Without it the bondo won’t get hard. Put a small piece of bondo on a board and run a line of hardener from end to end. It will take about five minutes to mix it up and apply it.

Is Bondo all purpose putty waterproof?

As a result, Bondo® All-Purpose Putty is water resistant and will not shrink. This saves money, and allows you to make professional-looking repairs that last.

What comes first primer or Bondo?

The other says primer, then Bondo. Avoid endless forum threads and consult the manufacturer for the definitive answer. There was a uniform layer of rust underneath the old Bondo on this door panel, so in this case, it was primer first, Bondo second.

How many coats of filler primer do I need?

Strain Filler Primer with a fine screen before pouring it into a spray gun cup. Set the conventional spray gun pressure to 30-40 psi. Apply 2-3 coats allowing 5-10 minutes of dry time between coats.

What is glazing putty?

Glazing Putty is commonly used in the installation and repair of window glass panes. Glazing putties are made from many different materials. The putty immediately forms a tight seal that keeps-away moisture and has immense bonding strength.

Are body fillers flexible?

A high adhesion and flexible polyester filler specifically designed for scuffs and scratches on plastic parts that require ultimate flexibility e.g. bumpers.

Is Bondo flexible when dry?

Bondo dries hard, like a sheet rock type texture almost. It cracks really easy, not to mention seperates from its mating surface easy when flexed. For a bumper, Id use some kind of plastic filler, like duraglass or something. It dries like silicon, and it can flex a little.

What is flexible filler?

Use flexible filler or caulk to fill cracks and gaps in walls, wood and other surfaces. Flexible filler also known as decorators caulk, comes in external and internal grades. Most people just think of flexible filler as being an internal product. Caulk is defined as making water or air-tight by filling or sealing.

How thick is too thick body filler?

So in the spirit of political correctness and repeating the party line ” Ideally filler should never be more than 1/8″ thick “.

Can I put body filler over paint?

It is normal for filler and puttie to work OK over OEM paint that has been properly sanded (80-180 grit). … Paint should be removed from the area where filler will be applied before it is applied.