How Do You Apply Bondo Over Fiberglass?

How to Use Bondo for Fiberglass

1. Locate the filler and the hardener from the Bondo kit.
2. Select a clean piece of plastic or glass or some other smooth material to mix the Bondo.
3. Mix the filler to ensure that the chemicals of the filler are evenly distributed.
4. Mix the hardener by thoroughly kneading the tube.

Can I put Bondo over fiberglass?

Bondo Body Filler cures fast, shapes in minutes and is formulated to be a non-shrinking and permanently durable material. In addition to its uses on vehicle exteriors and other metal surfaces it is also a suitable repair option for wood, fiberglass and concrete.

Will Bondo work on fiberglass boat?

I wouldn’t recommend it. Bondo isn’t really meant for use in a marine environment. It would be better to repair the dings with something like MarineTex two-part epoxy instead, and then gelcoat over it.

Can you use Bondo over gelcoat?

bondo has a polyester resin base so ya… polyester fiberglass resin (or gel-coat) will bond fine.

Is bondo stronger than fiberglass?

Registered. “Bondo Glass” is a short strand fiberglass filler, I goes on like Bondo, but it is made of fiberglass, so it is stronger, it’s also a little harder to sand then regualar bondo.

How thick can you apply fiberglass filler?

So in the spirit of political correctness and repeating the party line ” Ideally filler should never be more than 1/8″ thick “. In real life I have seen bondo from another persons previous repair be two inchs thick and last 15 years or more with no problems until the car was damaged again in the repaired area.

How do you mix Bondo fiberglass resin and hardener?

Mix the Bondo® All Purpose Fiberglass Resin in a paper cup with the Bondo® Fiberglass Resin Hardener. For small applications use 10 drops of hardener per ounce of resin. Working time will be 10 to 12 minutes. For larger applications, use half of the fiberglass resin hardener supplied, to half of the resin container.

Is Bondo fiberglass resin waterproof?

Made with the same resin used to build many boats, Bondo® All-Purpose Fiberglass Resin is 100% waterproof for a versatile range of projects such as repairing tubs, showers, sinks, pools, hot tubs and boats.

Can you use Bondo on a fiberglass tub?

The Bondo Shower & Tub Kit from 3M was designed to permanently repair small chips, scratches, cracks gouges and holes in fiberglass, porcelain and acrylic tubs, showers, sinks, hot tubs, pools and boats.Bondo Shower & Tub Kit should be used on white or almond surfaces only if a perfect match is desired.

Can you use Bondo on the hull of boat?

Bondo should never be used on a boat.

Should I use fiberglass or body filler?

Both fiberglass fillers are stronger than regular body filler. The long hair filler provides the most strength out of the two. However, these fillers are very difficult to sand. The filler is also thick, which makes it hard to level and smooth like regular body filler.

Can you layer bondo?

Yes, you can layer bondo over bondo as much as necessary with no problem.

How thick can you layer bondo?

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!

How do you bond fiberglass to metal?

Apply the epoxy to the metal surface and the fiberglass surface. Stick the fiberglass and metal together. Wipe off any epoxy that squeezes out. Allow the epoxy 24 to 48 hours to cure, bonding the fiberglass to the metal.

Can you thin Bondo fiberglass resin?

The short answer is “yes” you can addy polyester fiberglass resin to bondo (generic term) to thin it down some. Different companies make a special “thinner” for bondo that is polyester resin based but with some additives.

How much hardener do you use with fiberglass resin?

tube of liquid hardener (MEK Peroxide) is sufficient to harden the entire contents of a gallon container. Add 14 drops of liquid hardener per 1 oz. of Fiberglass Resin (or for ¼ can of Fiberglass Resin, use ¼ tube of liquid hardener).

How long before I can sand fiberglass?

Before sanding, let the fiberglass sit out in the sun for 2 to 7 days to cure the gelcoat. This process releases any air pockets from the gelcoat that would cause problems when sanding and painting.

Is Bondo fiberglass resin polyester or epoxy?

Bondo Fiberglass Resin is a strong material commonly used for autos, boat building and other repairs. This high-strength polyester resin can be used with fiberglass mats or cloths on surfaces including fiberglass, wood, metal and masonry to repair metal rust-outs and to recreate or join surfaces.

What does Bondo fiberglass resin do?

Bondo All-Purpose Fiberglass Resin is your go-to material for sealing cracks, repairing breaks or filling holes in fiberglass, wood, concrete or metal. Along with cloth tape or matting, this 100% waterproof resin can be used for hundreds of repair projects to include cars, trucks, pools, showers, boats and more.

How do you use Bondo fiberglass resin jelly?

For a golf ball-size amount of resin jelly, squeeze out 1 1/4 inch strip of hardener, or mix a 3 inch diameter circle 1/2 inch thick of resin jelly to a 3 inch strip of cream hardener. Mix thoroughly to a uniform color on clean, non-porous surface. Mix only small amounts that can be used within 3-4 minutes.