The 9 Best Auto Body Fillers And Hardener (2022 reviews)

auto body fillers and hardener
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Are you planning to buy auto body filler and hardeners, and are you confused about the options ? Your search ends here.

Our review process:

Our Top Picks:

Best Overall:
Buy: Auto Body Filler And Hardener
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Best For Great Price:
Buy: Bondo Polyester Resin
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Best For Spreading Body Puddy:
Buy: Bondo Right Size Spreader
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Compatible With All Paints:
Buy: Bondo Fiberglass Filler
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Best For Bumper:
Buy: Bondo Fiberglass Resin
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Best For Boat:
Buy: Bondo Regular Body Filler
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Best For Smooth Finish:
Buy: Bondo Versatile Filler
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Best For Plastic Bumper:
Buy: Bondo Body Filler
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Best For Body Work:
Buy: Bondo Glazing And Spot Putty
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Best Overall: Auto Body Filler And Hardener

Auto Body Filler And Hardener
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If you often find yourself confused about good filler, this should be your first option for buying. The Auto Body Filler And Hardener includes bondo fiberglass resin liquid hardener for convenient, accurate mixing. Make sure this fits by entering your model number. 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.

Lastly, the autobody iller andhardener s made for good stuff, is great with good bond and it provides for great adhesion.

Most buyers agree that the filler will set up pretty quickly. Moreover, a few also found that the filler is great for re-finishing old cars. Also, a few say that the filler is a very reasonable and respectable alternative. In short, for most buyers, it was what they were looking for.

Top Customer Quotes:
  • This is a bit nerve wracking when doing it the first couple of times.
  • This is paintable on most surfaces without running.
  • This can also be used as a sealer on damaged and rotted wood.
  • This is used for one full container of resin.

Best For Great Price: Bondo Polyester Resin

Bondo Polyester Resin
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Compared with other products by Bondo, the Bondo Polyester Resin has a convenient design. The bondo polyester resin is easily mixed using the included bondo liquid hardener, designed specifically for use with bondo fillers and resins. Along with its strength, bondo fiberglass resin is also simple to use. This trusted fiberglass resin is ideal for resurfacing bathtubs or showers, and joins most surfaces together with a lasting bond.

Above all, the bondo polyester resin is sandable in less than two hours.

Most customers opine that the filler is easy to find in most stores and use to use. And, a few say that the filler is easier to judge the activator. Moreover, a few strongly agree that the filler has a dark greenish cast that finishes dark enough to almost look natural. In short, many have used the filler for more than a few months without letup, and it shows no sign of giving up.

Top Customer Quotes:
  • This is perfect for automotive body repair and it is made for good stuff.
  • This takes a learning curve to catch on how to use.
  • This is a strong material commonly used for autos, boat building and other repairs.
  • This works for small repairs, is super tough and it provides great adhesion.

Best For Spreading Body Puddy: Bondo Right Size Spreader

Bondo Right Size Spreader
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If you want nothing but a product that is satisfactory, this Bondo Right Size Spreader is certainly a right investment. The bondo right size spreader is great for decent quality, is perfect for great quality and it makes for a great buy. Made from durable plastic, each spreader is strong enough to last yet highly flexible, giving you all the leverage you need to work effectively across flat or curved surfaces. Further, it works fine and it is made with very good edges.

The filler comes with no joints or seams that can collect putty or filler, single-piece reusable spreaders are easily cleaned. Most importantly, the bondo right size spreader comes with its strength, flexibility, clean front edge and fast, easy cleaning, It is the right tool for the job.

Most buyers quickly discovered that the filler is a simple utilitarian tool that is a must have when working with bondo. And, they strongly agree that the fillers are a bit more flexible to conform to odd shapes. To sum up, many have used the filler for more than a few months without any complaints, and it shows no sign of giving up.

Top Customer Quotes:
  • They are easy to clean off and are very durable.
  • This is perfect for spreading body puddy.
  • Handy little items for spreading bondo or any kind of wood filler, really.
  • For industrial/occupational use only. Not for consumer sale or use.

Compatible With All Paints: Bondo Fiberglass Filler

Bondo Fiberglass Filler
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The Bondo Fiberglass Filler is capable of outshining several other products featured in this list in overall features for the price point. The bondo fiberglass filler is good for bare metal and it is ideal for stainless steel. And helps you rediscover the excitement of the vehicles you own. This reinforced body filler already contains short, interlocking fiberglass strands, making it twice as strong as standard body filler and also much easier to use during vertical repairs when the filler can drip down the surface and cause extra work.

Above all, the bondo fiberglass filler is ideal for repairing dime size or smaller (up to ½”) rusted-out metal holes and shattered fiberglass body parts.

Almost all buyers quickly discovered that the filler is a more expensive version for cars made in 2007 or newer. Further, they strongly agree that the filler comes with a tube of hardener, which you need to activate the filler. Further, a few strongly agree that this material would not work very well as it dries rock hard and will not flex. In short, the tone of buyers is very positive and we believe that the filler suits the purpose.

Top Customer Quotes:
  • This is more expensive, but serves its purpose very well.
  • This does contain some fibrous material (the "fiberglass reinforcement"), which helps it fill larger gaps.
  • This works with normal body filler as well.
  • This is used to fill dents on your gas tank.

Best For Bumper: Bondo Fiberglass Resin

Bondo Fiberglass Resin
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Bondo has been making great fillers for years, thanks to a combination of clever design and appropriate materials. The Bondo Fiberglass Resin is easily mixed using the included bondo red cream hardener, designed specifically for use with bondo fillers. Bondo glass reinforced filler makes an excellent foundation for hole, dent and rust-out repairs without the need for backing strips, cloths and resins. This fiberglass reinforced filler is another way that 3 m applies science to life.

The filler fits with running boards, is made for good stuff and it hardens very quickly. Lastly, the bondo fiberglass resin is sanded smooth and it comes with great stuff.

Most customers quickly discovered that the filler is perfect for repairing the type of hard top your jeep has. Also, a few say that the filler is fiberglass resin with short strand fiberglass as a filler. In addition, a few say that this fiberglass fillerand a top filler to properly fill the holes and create a smooth surface to paint. So, buyers were eager to recommend it to friends and families.

Top Customer Quotes:
  • This will turn to a rusty brown color.
  • This is the best way to fix anything it sticks to.
  • This is the more expensive version for a car made in 2007 or newer.
  • This is perfect for patching, is good for shelf life and it is super strong.

Best For Boat: Bondo Regular Body Filler

Bondo Regular Body Filler
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The Bondo Regular Body Filler's superior materials make sure that it ages well with use. The bondo regular body filler is very solid, is made with great stuff and it is for bare metal. If your repair needs even more strength, it also works well with traditional fiberglass repair materials and tools. This reinforced bodyfiller already contains short, interlocking fiberglass strands, making it twice as strong as standard body fillerand also much easier to use during vertical repairs when the filler can drip down the surface and cause extra work.

The filler is sanded smooth, is super strong and it is compatible with most paints. In addition, the filler hardens quickly and it is used for small repairs. Above all, the bondo regular bodyfiller is perfect for patching and it cures quickly.

Most customers quickly discovered that the filler is not porous and wont bubble up after a couple of years if it goes over pitted or rusted metal. Further, they also found that the filler is easy to use, top quality short strand body filler. Also, they strongly agree that the material is shaped with a grinder until it is nearing the desired finished dimension, then you follow up with a suitable conventional body filler.

Top Customer Quotes:
  • It is very strong and the adhesion is very good.
  • This is the more expensive version for a car made in 2007 or newer.
  • It takes two coats to fill the hole.
  • This has filled a large hole and it went on smoothly.

Best For Smooth Finish: Bondo Versatile Filler

Bondo Versatile Filler
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The Bondo Versatile Filler is suitable and reliable and fits well with your daily uses. The bondo versatile filler is sanded smooth and it dries fast. This system helps you work easily, efficiently and successfully across the entire body repair process. This waterproof filler delivers twice the strength of standard body filler, making it ideal for rebuilding missing pieces during full vehicle restoration.

The filler is good for other painted surfaces and it is super strong. Lastly, the bondo versatile filler hardens quickly and it is good for stainless steel.

Most customers quickly discovered that the filler is easy to sand and sands quite smooth, but creates a lot of dust. In addition, a few say that the filler will sand out nicely, leaving a smooth surface that will take paint without issue. And, a few strongly agree that the filler is as good as it gets for finishing.

Top Customer Quotes:
  • This is perfect for automotive body repair and it can make for holes in fiberglass.
  • Versatile filler works with fiberglass, metal and wood.
  • This is great for shelf life, comes with great stuff and it passed inspection.
  • Fast dry formula allows for sanding in only 20 minutes.

Best For Plastic Bumper: Bondo Body Filler

Bondo Body Filler
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Compared with other products by Bondo, the Bondo Body Filler has a convenient design. The bondo body filler dries very quickly and it is ceramic. As a brand of 3m, bondo is well known among collision repair professionals and others who are committed to helping restore the beauty and value to your automobiles. This 1 - part nitrocellulose putty dispenses easily and efficiently right from the tube with no mixing, affords a 3 - minute working time and is sandable in 30 minutes for fast, efficient repairs.

The filler is non-staining, so it won’t affect the color of paint or finishes around the repair area. Lastly, the bondo body filler sands easily and it very easily.

Most customers found that the filler would not fill large dents. Further, they strongly agree that the filler is not for removing or leveling of paint/clear coat runs. Moreover, they also found that the 3 m bondo 801 professional glazing and spot putty bonds to properly prepared surfaces of primer, metal, fiberglass and aluminum.

Top Customer Quotes:
  • This does have to be primed after use for best results.
  • Fast drying – sandable in 30 minutes.
  • This includes painting the area and blending and smoothing primer and paint.
  • And helps you rediscover the excitement of owning and operating like-new vehicles.

Best For Body Work: Bondo Glazing And Spot Putty

Bondo Glazing And Spot Putty
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The Bondo Glazing And Spot Putty's material feels more premium than its price would suggest. The bondo glazing and spot putty is used for stone chips and it provides for ease of use. Fast curing makes putty sandable in only 20 minutes. This stage involves patching holes with reinforced filler and smoothing and shaping filler before painting.

Most importantly, the bondo glazing and spot putty works fine, very easily and it is used for other painted surfaces.

Almost all buyers agree that the filler can be used right out of the tube and sands to a beautiful smooth finish. And, they also found that the filler does have to be primed after using it for best results. In addition, a few strongly agree that the professional glazing & spot putty is not premixed, the hardener is included and has to be mixed together to cure. Overall, many have used the bondo glazing and spot putty for more than a few months without any issues, and it shows no sign of giving up.

Top Customer Quotes:
  • This can also be applied over sanded 2 part primers, oem paints and epoxy primer.
  • This is sanded smooth, dries very quickly and it is ceramic.
  • This is easy to use, but wear thick gloves or 2 pairs.
  • This is so a lot easier to sand than regular wood fill.