For professionals and DIY lovers, JB Weld is an all-time favorite. It is a high-quality epoxy adhesive that does its job exceptionally well.
Unfortunately, taking it off can be a headache for most users. To address that, I’ve put together a quick guide to teach you how to remove JB weld to make your life easier!
About J-B Weld: What it’s Made Of + Why it Differs from Others
Before learning the different ways of removing JB weld, it would serve you well to know about the mechanism of how this specific glue works and how it differs from other adhesives.
JB weld is a specialized, high-temperature adhesive that creates a strong bond between multiple surfaces. It is a glue type often known as a two-part epoxy or adhesive, more or less the same as Gorilla glue.
This weld is a strong epoxy glue with an equal ratio of hardener and resin, giving the glue a long shelf life and amazing tensile strength.
Where to Use and How to Cure J-B Weld
JB weld is considered a multi-purpose cold epoxy and welding system. You may use it on plastics, concrete, bricks, metal, steel, porcelain, ceramic, wood, fabric, PVC, and fiberglass.
As for curing the JB weld, you will need to let it sit for at least 15-24 hours, and it must be placed in a location at room temperature. A fully cured J B weld can survive temperatures up to 550 degrees Fahrenheit.
3 Removal Methods for JB Weld
Here are the three methods I’ve found most effective for removing JB Weld from various surfaces!
Method #1: Extreme Heat Application
Applying extreme heat is the simplest way to remove JB Weld from metal surfaces and other areas that can handle high temperatures. Given that JB Weld is a two-part epoxy, it doesn’t hold up well under intense heat.
This kind of weld tends to get unstable if exposed to high temperatures of 600 degrees Fahrenheit and more. The high heat temperature will create enough damage to the internal chemical structure of the glue.
Safety Precautions + Tips
- Wear a pair of thick gloves to avoid irritation
- Put on some appropriate goggles when you are heating the JB weld
- Facemask is also recommended to avoid the effects of harsh fumes and chemicals
Additional Tip: When you plan to remove the JB weld, conduct the process in a well-ventilated area.
Tools & Materials
- Heat gun, propane torch, or soldering iron
- Facemask
- Gloves
- Goggles
Steps
- First, use the heat gun to easily and quickly remove JB weld. The JB weld will take a little time to soften and loosen its hardness.
- Expose the weld to the intense heat of about 600 degrees Fahrenheit using the heat gun.
- Another option I’ve tried is using a propane tank with a torch attachment. If you opt for a propane torch, I’d recommend keeping it on a low flame setting. Safety first!
- Use a soldering iron if the area with the JB weld is too small or narrow.
Method #2: Grinding
If a heat source is unavailable, try the mechanical force method using a grinder to remove the JB weld.
Mechanical abrasion refers to the disruption in the material surface caused by sliding or rolling, leading to debris release. The most popular form of this is sanding. [1]
Though, note that this procedure is time-consuming.
Safety Precautions + Tips
- Wear goggles when you use mechanical abrasion
- Gloves are needed to prevent any metal shavings from puncturing the skin
- Ensure you have facemasks on to avoid inhaling metal shavings
Additional Tip: Ensure you grind and file the area with the JB weld carefully without causing much damage to the wood.
Tools & Materials
- An angle grinder, sandpaper, or Dremel
- Facemask
- Gloves
- Goggles
Steps
- Use the Dremel, angle grinder, or sandpaper and start grinding or filing.
- The impact strength should be 1,800 PSI to break and dissolve JB weld area.
Method #3: Using Chemicals
Using chemicals and potent acids, such as vinegar or acetone, is also my preferred method to tackle JB Weld. These substances soften the weld, making its removal much more straightforward. Always ensure proper ventilation and safety precautions when working with chemicals.
Safety Precautions + Tips
- Wearing facemasks is a must since you are dealing with chemicals and fumes
- Use goggles to protect your eyes
- Wear gloves to remain acid-proof and prevent chemicals from touching your skin
Additional Tip: Avoid mixing up techniques. If you’re using acetone, don’t mix it with vinegar — and vice versa.
Tools & Materials
- Vinegar or acetone
- Facemask
- Goggles
- Gloves
Steps
- To remove JB weld from the surface, apply the chemicals (vinegar or acetone) and ensure you don’t miss a spot.
- Wait for the chemical reaction after saturating the area with chemicals. Dissolve the JB weld in the chemicals by letting it sit for 10-15 minutes.
Removing J-B Weld in Different Surfaces
After learning the general methods for removing JB weld, it is time to know what method and procedure is best to use in varying areas.
Metal
To eliminate JB Weld from metal surfaces, there are three efficient methods: mechanical abrasion, exposure to high temperatures, and the use of chemicals.
Referring to the aforementioned techniques will provide you with the necessary steps to ensure the proper removal of JB Weld from metals.
Plastic
When aiming to remove JB Weld from plastic, the methods I’ve highlighted above can be effective. In my experience with plastic, grinding and the careful application of heat are the best approaches, mainly because they’re predominantly non-toxic. Just be cautious not to overheat, as plastics can melt or warp.
Skin
Fast Orange hand cleaner is the tool to use when you plan to remove JB weld on your skin. Alternatively, using lacquer thinner, acetone, or another hand cleaner is also an excellent option.
Car Paint
When it comes to removing JB weld on car paint, sand the area using a chisel. Ensure that you are careful as you do so.
Aluminum
When it comes to removing JB Weld on aluminum, I recommend applying heat or using a grinder to simplify the process.
Is J-B Weld Permanent?
No. This epoxy glue does not create a permanent bond. Although, it takes a lot of effort and work to remove JB weld as it makes a strong bond.
Can You Use Alcohol to Dissolve J-B Weld?
No. Alcohol cannot remove J-B weld on a surface, especially if it’s fully cured epoxy already. You may, however, use it while the glue is still curing.
What Surface Will JB Weld Not Stick To?
JB weld would not stick to substances like flexible rubber surfaces, leather vinyl, polyethylene plastic, and canvas.
JB Weld Alternatives
KwikWeld
It is an excellent alternative to JB weld as it hardens quicker (about 4-6 hours) and can bond metals like copper, steel, bronze, and brass. The main downside is that its max strength is only about 2/3 of JB weld.
Welding Machine
If you’re considering an alternative to epoxy altogether, you might want to think about using a welding machine. Genuine weld seams tend to handle much higher temperatures.
More removal tips here:
Conclusion
With the information provided, you’re now equipped with knowledge on how to remove JB Weld, including the necessary materials and safety precautions to keep in mind. At the end of the day, the best method for JB Weld removal largely depends on your personal preference.
And a reminder from someone who’s been there: always double-check the tools you have on hand before diving into the process.
Robert Johnson is a passionate furniture maker & carpenter, sought after for his knowledge on the craft.
You’ve probably seen his down-to-earth wisdom in USA Today, Bobvila, Family Handyman, and The Spruce, where he has shared commentary and guidance on various woodworking topics.
Robert is the brain behind Sawinery, where he aims to share tips, tricks, and a passion for all things carpentry.
