Does J-B Weld Work On Wood?

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Joining things together is an integral part of woodworking.  All kinds of joinery techniques, creating a tabletop by gluing planks together, and more, are a part of the work we do in our shops.  

When it comes to glues and bonding agents, there are far more than just a handful to choose from.  We know what they are, and we all have one or two we keep handy at all times in the shop.

We’ve written a number of articles about wood glues, including how strong wood glue is, how long wood glue takes to dry, and even the disadvantages of wood glue.

Key Points:

  • Yes, J-B Weld’s WoodWeld product works well on wood, creating a strong and durable bond.
  • For quick repairs, J-B Weld KwikWood Epoxy Putty will offer quick relief for small, non-load bearing repair work on wood tables, wood chairs, and such.  If the wood table or chair needs more structural strength in its repair, stay with the WoodWeld, which is meant for more load-bearing project tasks like wood table legs and other wood furniture. 
  • Keeping those two J-B Weld products in your shop is a good idea.

Today we’re adding another strong bond agent, J-B Weld.  Not as ubiquitous as Elmer’s or even Gorilla, and perhaps not as well known, J-B Weld is nonetheless a good product to keep handy.

But which kind?  For which purpose?  Questions, there are always questions.  We’ll offer some answers for you in this piece.

What Is J-B Weld?

J-B Weld is a two-part epoxy adhesive that is used to create strong, lasting bonds between metal and other materials. It is a popular product for DIY repairs, and it can be used to fix a wide variety of things, including broken tools, cracked pipes, and leaking faucets.

J-B Weld 8265S Original Cold-Weld Steel Reinforced Epoxy – 2 oz.
  • J-B WELD ORIGINAL: The Original Cold Weld two-part epoxy system that was designed as an alternative…
  • CURE AND SET TIME: After mixing the tubes at a 1:1 ratio, it takes 4-6 hours to set and 15-24 hours…
  • VERSATILE & DEPENDABLE: J-B Weld Original is steel reinforced, has a tensile strength of 5020 PSI…

J-B Weld is made up of two components: resin and hardener. The resin is the main ingredient that provides the strength of the bond, while the hardener activates the resin and causes it to cure.

When the two components are mixed together, they form a hard, durable bond that can withstand high temperatures and stresses.

J-B Weld is available in a variety of sizes and forms, including tubes, syringes, and putty sticks. It is also available in a variety of colors, including black, white, and clear.

Here are some of the things that J-B Weld can be used for:

  • Repairing broken metal objects
  • Fixing cracked pipes
  • Sealing leaks
  • Bonding different materials together
  • Making repairs in extreme conditions

J-B Weld is a versatile and powerful adhesive that can be used for a variety of projects. It is a good choice for DIYers who need a strong, lasting bond.

Here are some safety precautions to take when using J-B Weld:

  • Wear gloves and eye protection when working with J-B Weld.
  • Keep J-B Weld out of reach of children and pets.
  • Do not use J-B Weld in areas where it will be exposed to high temperatures or flames.

*We just wrote an article about removing J-B Weld in case you mess up or need to separate your work pieces.

What Are The Different Types of J-B Weld?

J-B Weld is a brand of epoxy adhesive that is available in a variety of forms and strengths. Here are some of the most popular types of J-B Weld:

  • The Original: This is the most versatile type of J-B Weld. It is a two-part epoxy that is strong, durable, and water-resistant. It can be used to repair a wide variety of materials, including metal, wood, plastic, and concrete.
  • J-B Weld KwikWeld: This is a quick-setting epoxy that is ideal for temporary repairs. It sets in just 6 minutes and is fully cured in 1 hour. It is not as strong as Original J-B Weld, but it is a good choice for small repairs that need to be made quickly.
  • J-B Weld WaterWeld: This J-B Weld product is a waterproof epoxy that is specifically designed for underwater repairs. It is strong, durable, and can withstand water temperatures up to 180 degrees Fahrenheit.
  • J-B Weld MarineWeld: This J-B Weld type is a two-part epoxy that is specifically designed for marine applications. It is strong, durable, and can withstand salt water, moisture, and UV rays.
  • J-B Weld WoodWeld: This J-B Weld version is a two-part epoxy that is specifically designed for wood repairs. It is strong, durable, and can be sanded, drilled, and painted. This is the product to have around your woodworking shop for joining two wood pieces together. A good wood bonding will be created.
  • PlasticWeld: This is a two-part epoxy from J-B Weld that is specifically designed for plastic repairs. It is strong, durable, and can be used to bond a variety of plastics, including ABS, PVC, and acrylic.

Here is a list of some of the bestselling J-B Weld products on Amazon that you might find helpful:

Bestsellers
J-B Weld 8265S Original Cold-Weld Steel Reinforced Epoxy - 2 oz.
J-B Weld 8265S Original Cold-Weld Steel Reinforced Epoxy – 2 oz.
SURFACE APPLICATIONS: Metal, Plastic & PVC, Wood, Concrete, Ceramic & Tile and Fiberglass.
$6.54
Bestsellers
J-B Weld ClearWeld 5 Minute Epoxy, Clear, Syringe, 2 Pack, 50112-2
J-B Weld ClearWeld 5 Minute Epoxy, Clear, Syringe, 2 Pack, 50112-2
Strength: J-B Weld ClearWeld has tensile strength of 3900 PSI.
$10.80
On SaleBestsellers
J-B Weld Original Steel Reinforced Epoxy Syringe, High Strength, 2 Pack, Dark...
J-B Weld Original Steel Reinforced Epoxy Syringe, High Strength, 2 Pack, Dark…
STRENGTH: J-B Weld Original Syringe has tensile strength of 5020 PSI.; GREAT FOR: Great for household repairs, automotive, plumbing, marine, crafts and more.
$13.07

In addition to these standard types, J-B Weld also offers a variety of specialty products, such as thread lockers, fiberglass repair wraps, and exhaust repair kits.

When choosing a type of J-B Weld, it is important to consider the specific application. For example, if you need to make a temporary repair, you will want to use a quick-setting epoxy like KwikWeld.

If you need to make a permanent repair that will be exposed to water, you will want to use a waterproof epoxy like WaterWeld.

It is also important to follow the product instructions carefully when using J-B Weld. This will help ensure that you get the best results.

What is J-B Weld Tensile Strength?

Tensile strength is a measure of how much load a material can withstand when stretched or pulled in tension. It’s defined as the maximum load a material can support without breaking, divided by its cross-sectional area.

Tensile strength is a measure of the material’s ability to resist deformation under tension or stretching forces.

The tensile strength of J-B Weld varies depending on the type of J-B Weld and the curing conditions. However, in general, J-B Weld has a tensile strength of around 5000 PSI. This means that it can withstand a force of up to 5000 pounds per square inch before it breaks.

Here is a table of the tensile strengths of some common types of J-B Weld:

Type of J-B WeldTensile Strength (PSI)
Original J-B Weld5020
KwikWeld2424
WaterWeld4820
MarineWeld5020
WoodWeld4820
PlasticWeld4820

It is important to note that the tensile strength of J-B Weld is not constant. It will decrease over time as the epoxy cures. However, even after it has cured, J-B Weld will still be a strong, durable adhesive.

Here are some factors that can affect the tensile strength of J-B Weld:

  • The type of J-B Weld
  • The curing conditions
  • The surface preparation
  • The amount of J-B Weld used

To ensure that you get the best results, it is important to follow the product instructions carefully when using J-B Weld. This will help ensure that the epoxy cures properly and that it achieves its full tensile strength.

How Do You Use J-B Weld?

Admittedly, using J-B Weld products is akin to using any other epoxy glue.  We know epoxy glue creates the strongest bond among glues, and a strong bond is what we want when using glues of any type, a permanent bond that will last.

The process of using J-B Weld glues:

  1. Prepare the surfaces. Clean the surfaces to be bonded with a degreaser or detergent. If there is no grease to remove, warm soapy water may be sufficient to use, wiped away with a clean cloth. Then, roughen the surfaces with a file or coarse sandpaper to provide a good mechanical bond.
  2. Mix the resin and hardener. Squeeze equal amounts of epoxy resin and hardener from their respective tubes onto a disposable surface. Mix thoroughly for 2-3 minutes or until the mixture is a uniform color.
  3. Apply the J-B Weld. Apply the J-B Weld to the prepared surfaces with a putty knife or other suitable tool. Be sure to apply an even coat.
  4. J-B Weld Cure Time. J-B Weld cure time will be  4-6 hours before handling. It will be fully cured in 15-24 hours.

Here are some additional tips for using J-B Weld:

  • Work in a well-ventilated area.
  • Wear gloves and eye protection when working with J-B Weld.
  • Do not use J-B Weld in areas where it will be exposed to extreme temperatures or even high temperatures or flames. A constant temperature is the best environment when using J-B Weld.
  • If you are unsure about how to use J-B Weld, please consult the product instructions.

Here are some of the things to keep in mind when using J-B Weld:

  • J-B Weld is not a miracle cure-all. It is not designed to repair every type of damage.
  • J-B Weld is not as strong as welding. It is best used for small repairs or temporary fixes.
  • J-B Weld can be brittle when cured. It is not recommended for use in applications where it will be subjected to a lot of stress.

Overall, J-B Weld is a versatile and powerful adhesive that can be used for a variety of projects. It is a good choice for DIYers who need a strong, lasting bond. However, it is important to use it correctly and to be aware of its limitations.

Does J-B Weld Work Well on Wood?

Yes, J-B Weld works well on wood bonding. It is a strong epoxy adhesive that can be used to repair a variety of wood damage, including cracks, holes, and splits. J-B Weld is also water resistant, so it can be used on outdoor projects.

Here are some tips for using J-B Weld on wood:

  • Prepare the wood. Make sure the wood is clean and dry before applying J-B Weld. You can use a tack cloth if the wood is not dirty or a degreaser, detergent, or soapy water to clean the wood.
  • Roughen the surface. Roughening the surface of the wood will help it adhere better. You can use a file or sandpaper to roughen the surface.
  • Mix the resin and hardener. Squeeze equal amounts of resin and hardener from their respective tubes onto a disposable surface. Mix thoroughly for 2-3 minutes or until the mixture is a uniform color.
  • Apply the J-B Weld. Apply the J-B Weld to the damaged area with a putty knife or other suitable tool. Be sure to apply an even coat.
  • Cure the J-B Weld. Allow the J-B Weld to cure for 4-6 hours before handling. It will be fully cured in 15-24 hours.

Once the J-B Weld is cured, it will be a strong bond and a durable bond that can withstand a lot of stress. It can also be sanded, drilled, and painted.  Refer to the above chart on tensile strength.

Here are some of the things to keep in mind when using J-B Weld on wood:

  • Use the right type of J-B Weld. There are different types of J-B Weld available, so make sure you choose the right one for your project. For wood repairs, you will want to use a product that is specifically designed for wood.  It is a very good wood repair product that will bring two wood pieces together well and keep them together.
  • Don’t overmix the resin and hardener. Overmixing can weaken the bond.
  • Work in a well-ventilated area. J-B Weld can emit fumes, so it is important to work in a well-ventilated area.
  • Wear gloves and eye protection when working with J-B Weld. J-B Weld can irritate the skin and eyes, so it is important to wear gloves and eye protection when working with it.

Overall, J-B Weld is a good choice for repairing wood damage. It is a strong, durable adhesive that can be used for a variety of projects. However, it is important to use it correctly and to be aware of its limitations.

J-B Weld KwikWood Wood Repair

As the name suggests, this product is for a quick wood repair task.  

J-B Weld Tan KwikWood Wood Repair Epoxy Putty, 1 oz. Stick
  • J-B WELD KWIKWOOD: A hand mixable two part epoxy putty stick that is formulated to repair and…
  • CURE AND SET TIME: After kneading the two part formula together by hand, KwikWood takes 15-25…
  • PRODUCT FEATURES AND STRENGTH: J-B Weld KwikWood has lap shear strength of 900 PSI. KwikWood will…

J-B Weld KwikWood Epoxy Putty is a hand-mixable epoxy putty that is formulated to repair and rebuild wood. It is suitable for both indoor and outdoor use. It has a 15-25 minute work life, so work fast.  This product can be touched and worked after about 60 minutes, whether machining, drilling, sanding, filing, and painting.

Pros of a Kwikwood Wood Repair

  • Hardens in less than an hour
  • Thick consistency for fixing surface-level cracks
  • Exceptional adhesion to different wood materials
  • High-density
  • Quick curing and setting times

Cons of a Kwikwood Wood Repair

  • Not for large-scale repairs
  • It would be best if you pressed it hard
  • Not recommended for internal filing
  • It may not be suitable for beginners
  • Tiny amount

Again, a KwickWood Wood Repair is for a quick and very small-scale repair.  For a more large-scale repair, you will want to be using J-B Weld WoodWeld.  The right product for the right job, as we say.

What Is Epoxy Putty, You Ask?

Epoxy putty is a strong adhesive that consists of two parts: a resin and a hardener. When mixed together in equal amounts, the two parts form an extremely strong bond.

Epoxy putty is water-resistant, paintable, and stable under all temperatures. Epoxy putty can be used for filling gaps and gluing metal, wood, stone, and other surfaces.

Epoxy putty has a clay-like consistency that allows it to be gently pushed into holes or cracks to fill them. After it has cured, you can drill, file, sand, and paint epoxy putty.  

Video Demo Of J-B Weld WoodWeld

A simple repair of a damaged chair in a 2:38-minute video.  Perfect.

Consider having one or two of the J-B Weld product offerings in your shop – the J-B WoodWeld, and the KwickWood Epoxy Putty.

The J-B Woodweld will come in handy for, among other things, a damaged chair, as the video demonstrated, and the Epoxy Putty will be convenient for small, quick tasks.

Last update on 2024-04-13 / Affiliate links / Images from Amazon Product Advertising API

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