How do you remove dried J-B Weld?
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How do you remove dried J-B Weld?
When fully cured, J-B Weld can only be removed by grinding or filing it off, or by directly heating the product above the 600º maximum temperature threshold.
How do you undo a weld?

Usually, you can undo welding using torch cutting, plasma cutting, drills, grinding or circular saws, or oxy-acetylene torches. There are a couple of ways to perform this other than just applying a strong force to the weld.
Does J-B Weld work on metal?
J-B Weld is a two-part epoxy adhesive (or filler) that can withstand high-temperature environments. J-B Weld can be used to bond surfaces made from metal, porcelain, ceramic, glass, marble, PVC, ABS, concrete, fiberglass, wood, fabric, or paper.
Can J-B Weld be applied in layers?
JB Weld can be applied in layers. Just clean the surface thoroughly, apply the JB weld, 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 completely cured.

Can you break a weld?
Since there are distinct welding types, there are diverse needs to remove a weld. Usually, you can undo welding using torch cutting, plasma cutting, drills, grinding or circular saws, or oxy-acetylene torches. There are a couple of ways to perform this other than just applying a strong force to the weld.
Can you Unweld?
The bad news is that there is no “unweld” button, so if you make a mistake and keep working without realizing it, you’re basically screwed. There’s no other way to put it.
Does J-B Weld need to be clamped?
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.
Does J-B Weld get old?
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.
How do you get something welded off?
Steps to take:
- Mark the place you want to make the cut with a marker.
- Secure the piece you want to cut using vices or clamps.
- Put on your protective gear.
- Connect your tool – the grinder or the saw – to the electric outlet.
- Slowly allow the grinder to start cutting the metal.
- Cut the power and let the metal cool down.