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can you use bondo glass on metal

by Mark Thiel Published 3 years ago Updated 2 years ago

You can use Bondo hair and Bondo glass on fiberglass, wood, and metal. Considering how versatile they are, it’s important to have both on your garage shelves. • Don’t Require Backing Strips or Cloths

For Auto or Marine
This waterproof filler is ideal for repairing dime size or smaller (up to 1/2") rusted-out metal holes and shattered fiberglass body parts. It is compatible with all paint systems for cars and boats.

Full Answer

Can you use Bondo on painted metal?

Do not slap Bondo onto a smooth painted surface, it is not going to stick very well. The paint should be sanded off, to the bare metal, and then apply the filler. A 36-grit to 180-grit surface is ideal for body filler application so that the filler has a good rough surface to grip.

How do you use Bondo to repair broken glass?

Start by sanding the area to be repaired with the 80 grit sandpaper. This creates a surface for the Bondo to bite into it. After stirring the compound in the can, scoop a bit of the Bondo into a plastic container. Only use enough Bondo for the project.

Does Bondo gold need to be sanded?

The lightweight Bondo Gold is far easier to sand than the heavier type, so consider using the good stuff on the way out. Use a tack cloth to remove any dust between coats. Repeat the clean, mix, spread, carve, and sand routine until the repair is flat.

What is Bondo glass reinforced filler?

More... Bondo® Glass Reinforced Filler provides fiberglass-quality repair of small holes and rust-outs (up to 1/2") without the need for backing strips, fiberglass mat or fiberglass resin.

Can you use fiberglass filler on metal?

What can fiberglass filler be used on? This filler can be used over bare metal or fiberglass. In auto body, it is normally the first coat applied over welded repair.

What is Bondo glass good for?

Bondo Glass Reinforced Filler makes an excellent foundation for hole, dent and rust-out repairs without the need for backing strips, cloths and resins. It contains short, interlocking fiberglass strands and fibers that make it twice as strong as regular body filler.

What's the difference between Bondo filler and Bondo glass?

0:191:21Types of Bondo® Filler - YouTubeYouTubeStart of suggested clipEnd of suggested clipIt also has a smooth texture that makes it easy to mix and apply bondo fiberglass resin and bondoMoreIt also has a smooth texture that makes it easy to mix and apply bondo fiberglass resin and bondo fiberglass resin jelly are great for repairing minor rust out in a variety of materials.

Can you use Bondo on metal?

This simple 2-part filler is reinforced with aluminum — great for use on fiberglass, metal, aluminum and even wood or masonry. Metal Reinforced Filler includes a small tube of hardener.

How strong is Bondo glass?

3M Bondo Glass Reinforced Filler makes an excellent foundation for the hole, dent, and rust-out repairs without the need for backing strips, cloths, and resins. It contains short, interlocking fiberglass strands and fibers that make it twice as strong as regular body filler.

How long does it take for Bondo glass to cure?

In theory, properly mixed Bondo can be applied in any thickness, but beware of gravity-induced sagging. Curing time depends primarily on ambient temperature and how much hardener you add. Bondo mixed to the color swatch will begin to cure in less than 10 minutes at room temperature.

What type of hardener does Bondo glass use?

Bondo® Red Cream HardenerThe filler is easily mixed using the included Bondo® Red Cream Hardener, designed specifically for use with Bondo® fillers....Bringing Science to the Art of Auto Body Repair.Attribute NameValueProduct TypeGlass Reinforced FillerSandabilityBetter11 more rows

What is the difference between Bondo stage 2 and 3?

Stage 2 – Fill. This stage involves patching holes with reinforced filler and smoothing and shaping filler before painting. Stage 3 – Paint. This stage includes painting the area and blending and smoothing primer and paint.

How do you mix Bondo glass?

2:095:41Mixing and Applying Body Filler - Bondo - YouTubeYouTubeStart of suggested clipEnd of suggested clipConsistency. Move the portion you think you will need onto the glass. Now pick up your hardener tubeMoreConsistency. Move the portion you think you will need onto the glass. Now pick up your hardener tube and knead it a lot it's got to be properly.

Is there anything better 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).

How do you fill holes in metal without welding?

Epoxy or Tape Epoxy and tape are two common no-weld hole repair options. These do-it-yourself approaches are effective when repairing a small hole rather than a significant tear. Specialty epoxy and tape products are designed to patch steel and metal.

How do you use body filler on metal?

10:2821:17Body Filler for beginners - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo the body filler can go straight on it we just need to etch the surface using some 150 grit dryMoreSo the body filler can go straight on it we just need to etch the surface using some 150 grit dry sandpaper. That's going to scratch up the surface. And allow the body filler to stick even.

What is Bondo glass?

Bondo® Glass Reinforced Filler provides fiberglass-quality repair of small holes and rust-outs (up to 1/2") without the need for backing strips, fiberglass mat or fiberglass resin. This reinforced body filler contains short, interlocking fiberglass strands, making it twice as strong as standard body filler and much easier to use during vertical repairs. If your repair needs even more strength, it also works well with traditional fiberglass repair materials and tools.

How long does it take for Bondo to dry?

It also features a fast-drying formula that is sandable in as little as 20 minutes, saving you time on auto body repairs. For Auto or Marine.

Is fiberglass filler stronger than regular filler?

Hover to zoom. Fiberglass strands and fibers make it twice as strong as regular body filler. Covers small (up to ½”) holes without the need for backing strips, fiberglass resin or cloth. Excellent as a foundation for hole, dent and rust-out repair.

How to mix bondo?

Bondo hardens quickly, so it’s important to mix it in small, usable amounts. Start with a golf-ball sized amount of filler and mix up more as needed . The ratio is also crucial—too much hardener will cause the mixture to gel too quickly, and too little may keep the mixture from hardening at all.

What is bondo used for?

Learn more... Bondo is an automotive body filler, often used for car and household repairs. You can use Bondo to fill in small dings and smooth out warped panels in a car body. Before you begin applying Bondo, make sure to sand down the paint, replace any rusted metal, and mask off any areas that don’t need filler.

How to fill dings in metal?

Load up your spreader with some Bondo mixture and scrape an 1⁄8 inch (0.32 cm) layer over the damaged area. Press down with the spreader to push the filler into the metal. Keep applying thin coats until all the dings are filled, up to a total thickness of 1⁄4 inch (0.64 cm).

How to apply bondo?

To apply Bondo, mix an inch diameter of the filler per inch-line of hardener. For example, use a 3-inch diameter amount of Bondo for a 3-inch line of hardener. Use a spreader or popsicle stick to mix the 2 ingredients together until there are no streaks left.

How long does it take to mix bondo?

Only mix as much as you can use in 10 minutes, since Bondo hardens quickly and you don’t want to waste it. Once you’ve mixed the Bondo and hardener, apply the mixture in thin coats about 1/8 inch thick and press it down into the cracks. After 10 minutes, use 36-grit sandpaper to smoothen out the surface.

How long does it take for bondo to cure?

If you applied masking tape beforehand, let the filler sit for several minutes before gently removing the tape. Wait 3-10 minutes for the Bondo to fully cure. Since you’ll be sanding and applying pressure after it dries, make sure the filler has time to fully harden and cure.

What to use for mixing?

For a mixing tool, use a clean plastic spreader or something disposable, like a popsicle stick. It’s best not to use screwdrivers or dirty tools for mixing because they are much harder to clean and could add grease or oil into the mixture. ...

What is bondo plastic?

Like most plastic body fillers, Bondo is a lightweight polyester-based plastic body filler that was originally developed as an alternative to lead body solder. The Bondo brand name was created in 1955, just a few years after the use of lead body solder began to be prohibited. Many bodymen of the time were not sold on the idea ...

How thick is bondo?

Thickness. 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 you slap bondo on a smooth surface?

Do not slap Bondo onto a smooth painted surface , it is not going to stick very well. The paint should be sanded off, to the bare metal, and then apply the filler. A 36-grit to 180-grit surface is ideal for body filler application.

Is Bondo 101 bad?

Bondo 101 – Basic For Working With Plastic Body Filler. There is not a more maligned automotive product than “bondo”. Plastic body filler is most often referred to by the brand name “Bondo” (made by 3M), and its bad reputation comes from decades of poor application and misuse. Every high-end custom car or restoration has body filler on it.

Can you use metal spreaders?

You can use plastic or metal spreaders, your choice. Metal spreaders last longer and provide a more defined edge, but plastic spreaders are cheap and can be cut to match shapes. Apply the filler to the panel, pushing the filler into any crevices.

Is lead solder dangerous?

Not to mention that lead body solder is very dangerous to work with. Where the bad reputation comes from is misuse and incorrect application. Plastic body fillers are intended for small dings and smoothing out warped panels. It was never intended to fill large dents, rust, or other major body damage.

Can you feel where the metal stops and the filler begins?

You should not be able to feel where the metal stops and the filler begins. Any defect you see or feel in the filler will be amplified when the paint is on the body, so check the panel repeatedly. Large repairs require extra effort, as you can easily get waves and ripples in the bodywork when working a large area.

What is bondo resin?

The miraculous blend of polyester resins and cream hardener known as Bondo can make wavy panels straight and door dings disappear. It can hide a welding seam in seconds; but Bondo in the hands of those with calamitous intentions can result in a restoration nightmare.

What to use to clean up a mixing board?

Gather up the Bondo, spreaders, putty knife, mixing board, the Surform or rasp, and acetone for clean up. A piece of scrap steel works excellent as a mixing board, but don’t use anything porous or absorbent. Disposable gloves are highly recommended.

How does bondo work?

Bondo, on the other hand, does not move. Like at all! This is highly desirable when making auto repairs, for which this substance is well-suited. But when you try to fuse Bondo and wood together, you’re likely to encounter the following scenario: 1 Air and weather changes prompt wood to move 2 The Bondo used to fill this wood remains constant 3 As the wood swells and shrinks, it applies pressure to the Bondo that forces cracking 4 Your patch is forced off the wood in short order needing re-repair

Why not use bondo as a wood filler?

So today I’ve got the definitive list for you of 6 reasons NOT to use Bondo as a wood filler. 1. Conceals Wood’s Natural Beauty. Wood is used so prominently in the construction of homes, furniture, and even instruments because it’s strong and beautiful. If you use Bondo as a wood filler, however, you will conceal the natural color and markings ...

What happens when you fuse bondo and wood?

But when you try to fuse Bondo and wood together, you’re likely to encounter the following scenario: Air and weather changes prompt wood to move. The Bondo used to fill this wood remains constant. As the wood swells and shrinks, it applies pressure to the Bondo that forces cracking.

Is Bondo toxic to people?

Lead worked well for this purpose but presented two major concerns: it required extensive skill to apply and is toxic to people.

Does Bondo stain well?

Another thing that isn’t a big deal if your painting , but just so you know Bondo does not stain well…at all. It is largely impervious to water and oil-based stains so your patch stands out like a sore thumb. Trying to overcome this will only yield two different colors on your surface that serve as obvious indications you’ve made repairs.

Does bondo release moisture?

Does Not Release Moisture. In most cases, wood can safely absorb a substantial amount of water before reaching a point of decay. But when the wood is suffocated by Bondo, that threshold becomes much less. Bondo is also well-known for holding moisture; the problem is that it does so without release. And just as moisture can become trapped between ...

Exactly How To Use Bondo Body Filler On Wood – Start From This Point

Those who have never tried Bondo body filler, first get some idea on the mixing rule as well as other supplies that you’ll need. The process of using this thing on wood would require also a hammer, chisel, putty knife, sandpaper with a rough or medium grip, and a wood hardener. The last one is optional though, however, it’s good for a great result.

A Tiny Tips

After sanding you might be left with a pile of wood dust and before you dump them out, there are many ways to use them. So just letting you know!

Wrap up

So, how does the whole thing look like after you try the method out! I hope it works for the best. Now that you know how to use Bondo body filler on wood, there’s no chance an old rotten part would cause you to stress anymore. See You In Some Other Topic Soon!

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