Joints in wooden furniture are often held together with wood glue. If you want to take a glued joint apart, there are ways that you can do it without destroying the surrounding woodwork. The glue inside of a joint can be broken down or softened with either a heat gun or denatured alcohol. If you can’t soften the glue first, it may be necessary that you manually break the wood pieces apart at the joint, which could result in damage to the woodwork.[1]

Method 1
Method 1 of 3:

Using a Heat Gun

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  1. Hold the heat gun six inches (15.24 cm) away from the joint and continue to move the gun around. Do not leave the heat gun in one area or you may end up burning your woodwork. Continue to move the heat gun over the joint and soften the glue holding the joint together.[2]
    • You can purchase a heat gun online or at a hardware store.
    • If you don’t have a heat gun, you can use a hairdryer on the high setting.
  2. Once the glue is hot, you should be able to penetrate into the joint with a sharp tool like a knife or metal wedge. Carefully work the tool into the glue while continuing to move the heat gun over the joint. Continue to wiggle the tool back and forth until you cut through all of the glue adhesive.[3]
    • Clean built-up glue off your flat tool with a damp rag as you work.
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  3. Once you cut the adhesive with the knife, the two pieces of wood should loosen. Use your hands and carefully pull the joint apart.
    • If desired, wipe the glue from the wood with a damp rag while it's still hot.
    Peter Korn
    Peter Korn, Woodworker and Educator

    When trying to break a wood glue joint, first understand the glue type and wood grain orientation. Carefully warm the adhesive to soften it, then employ a thin blade, patiently working it along the joint line. Forcing the joint risks wood damage. If the joint resists moderate effort, consider cutting through it and planning a repair instead of potentially ruining the piece. Patience and care are essential.

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Method 2
Method 2 of 3:

Using Denatured Alcohol

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  1. Suck up some of the alcohol with a syringe or eyedropper and place the end of the dropper or syringe against the joint. Press down on the top of the syringe to inject the alcohol into the joint. Repeat this method until the entirety of the wood joint is saturated.[4]
    • You can purchase denatured alcohol online or at a hardware store.
    • Work in a well-ventilated area when working with denatured alcohol.
    • Denatured alcohol will loosen up and dissolve the glue.[5]
  2. Let the alcohol sit on the joint for five minutes, then wedge a knife in between the two pieces of wood. Work the tool on the edge of the joint until you can start penetrating into the joint. As you work the knife, the wood joint should start to separate.
    • As the alcohol sits on the glue in the joint, it will start to break it down.
  3. Keep working the joint open with your knife while spraying more alcohol over the glue that's holding the joint together. As you work the knife and continue getting the joint wet, you'll start to loosen up the joint.
  4. Scrape away as much adhesive as you can. As the joint loosens, use your hands to pull the joint apart.[6]
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Method 3
Method 3 of 3:

Prying the Wood Apart

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  1. You should only use this method if you need to break down furniture or wood and don't plan on using the wood afterward. Manually prying the wood apart can chip or crack the wood surrounding the joint.
  2. Position the flat end of a crowbar or flat-bar in between the joint.[7] Hit the opposite end of the bar to drive it in deep between the joint. Continue to pound the crowbar into the joint until it's at least three to four inches (7.62 to 10.16 cm) into the joint itself.[8]
  3. Apply a decent amount of pressure on the other end of the crowbar to pry the joint apart. This will break apart your wooden joint.[9]
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Things You’ll Need

  • Heat gun
  • Knife
  • Crowbar or metal wedge
  • Hammer
  • Syringe or eyedropper
  • Denatured alcohol

About This Article

Ryaan Tuttle
Co-authored by:
Home Improvement Specialist
This article was co-authored by Ryaan Tuttle. Ryaan Tuttle is a Home Improvement Specialist and the CEO of Best Handyman, Inc. in Boston, Massachusetts. With over 17 years of experience, he specializes in building home service businesses, focusing on creating scalable and efficient brands. With the help of his global team, the companies have achieved over 10+ million in sales and received recognition through magazine features, and enjoy partnerships with wikiHow and Jobber field service software. Boston Magazine and LocalBest.com have named Best Handyman Boston the Best Handyman in Boston. Ryaan holds Construction Supervisor and Home Improvement Contractor Licenses. This article has been viewed 148,791 times.
95 votes - 92%
Co-authors: 5
Updated: April 19, 2024
Views: 148,791
Categories: Woodworking
Thanks to all authors for creating a page that has been read 148,791 times.

Reader Success Stories

  • Lance J.

    Lance J.

    Sep 21, 2023

    "We have 3,000 unfinished chairs to disassemble and will try all 3 methods. Thanks."
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