Can JB Weld be used like Bondo?

Body filler (aka bondo putty) and JB Weld are two completely different things, and are meant for different uses. You shouldn't be using JB Weld as body filler, and vice versa.
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What is a good substitute for Bondo?

You can use plastic/metal 2-part epoxies. Repair epoxy is also a good alternative.
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What should you not use JB Weld on?

J-B Weld will not adhere or bond well to:
  • Any flexible rubber surface.
  • Leather.
  • Vinyl.
  • Canvas.
  • Polypropylene plastic.
  • Polyethylene plastic.
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Is JB Weld permanent?

J-B Weld™ is The Original Cold Weld two-part epoxy system that provides strong, lasting repairs to metal and multiple surfaces. Mixed at a ratio of 1:1, it forms a permanent bond and can be shaped, tapped, filed, sanded and drilled after curing. At room temperature, J-B Weld™ sets in 4-6 hours to a dark grey color.
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Which is stronger epoxy or J-B Weld?

Weld was accualy better than epoxy. Not price wise, but its quality. JB Weld actually is stronger, but not enough to make it worth it. It's very hard to get smooth.
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Fixing and painting rim Bondo vs JB-weld



What is the strongest type of J-B Weld?

J-B Weld has a tensile strength of 3960 PSI and sets to a hard bond overnight. It can withstand temperatures up to 550ºF when fully cured.
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Is J-B Weld stronger than welding?

Than J-B Weld Epoxies. J-B Weld, known as "The Original Cold Weld," was developed as an alternative to traditional torch welding. It's designed to be extremely effective in even the harshest environments. Because it's a two-component (or 2k) epoxy system, it uses reactive chemistry to create the strongest bond possible ...
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Why is my J-B Weld not getting hard?

It stays soft for a few hours. That said, insufficient curing could be caused by several factors, the most important of which is: MIX REALLY REALLY THOROUGHLY. Scrape the surface of the mixing stick, and the container/surface you're mixing on, and then scrape them again.
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Will J-B Weld set if wet?

J-B Weld's WaterWeld (pictured) is a specially formulated epoxy putty that can be applied to a wet, leaking or underwater surface. Once kneaded, it can be easily molded. It has a set time of 15 to 25 min.
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Will Bondo set up 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. If it starts tacking up, stop applying it or you'll mess it up.
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Can you use fiberglass hardener for Bondo?

Bondo fiberglass resin liquid hardener is designed specifically for use with Bondo fiberglass resin and Bondo metal reinforced filler. This hardener is easily mixed with resin or filler; a chemical reaction creates an extremely strong, waterproof repair material.
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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.
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Does JB Weld adhere to paint?

As mentioned above, JB Weld will adhere to paint just fine, but it will only adhere as well as the paint to the surface. Just scrape offwhat you need to epoxy first.
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Can you fiberglass over JB Weld?

The results of the JB Weld Plastic Bonder fiberglass repair were excellent. Not only was the process quick and easy, but the panels look like they did from factory. The bond is strong; we would use this stuff on just about any plastic or fiberglass component that needed to be repaired.
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Can you put 2 coats of J-B Weld?

JB Weld can be applied in layers. Just clean the surface thoroughly, apply the JB welding, and wait at least 8 hours to re-apply. When applying additional layers, it's important to wait to apply until the first application is fixed.
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What can J-B Weld be used on?

J-B Weld can be used to bond surfaces made from metal, porcelain, ceramic, glass, marble, PVC, ABS, concrete, fiberglass, wood, fabric, or paper. Alcohol should be avoided when cleaning surfaces, as it can degrade the bond. J-B Weld is water-resistant, petroleum/chemical-resistant (when hardened), and acid-resistant.
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Does heat make J-B Weld cure faster?

Either use JB Quik as others mentioned or mix the JB weld & let it start to settup before applying to the area you want to patch. It's an epoxy, so should cure faster with heat.
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How long does it take for J-B Weld to fully harden?

At room temperature, J-B Weld sets in 4-6 hours to a dark grey colour. A full cure is reached in 15-24 hours. It has a tensile strength of 5020 PSI and sets to a hard bond overnight and can withstand temperatures up to 287ºC when fully cured.
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Should you clamp J-B Weld?

If you can clamp it together, that is a good idea. If not, just hold it together. The epoxy will be fully set in four hours at room temperature. If it is below 40 degrees, it will take longer.
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How long does J-B Weld 5 Minute epoxy take to cure?

From the manufacturer

ClearWeld has a 1:1 mixing ratio, sets in 5 minutes and cures in 1 hour. With a tensile strength of 3900 PSI, ClearWeld sets to a hard, permanent bond.
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How long does J-B Weld last in the tube?

The tubes of JB Weld will last up to 25 years once open, though we are sure you will have used them much, much faster than this.
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Is J-B Weld the strongest glue?

World's Strongest Bond | J-B Weld.
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What is stronger J-B Weld or Pc7?

Pc7 has been the best strongest epoxy I've been using for years. better than JB weld.
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